When comparing the density of metals to that of liquids, the percentage error is more likely to rise.
What is liquid density?A liquid's density is a gauge of how heavy it is relative to the amount being measured. The liquid that weighs heavier is more dense if you weigh two liquids with similar volumes or amounts. A substance less dense than water will float when it is gradually introduced to the water's surface.
How is the density determined?The mass to volume ratio of an object determines its density. The unit of density is frequently grams per cubic centimeter (g/cm3). Keep in mind that the volume is measured in cubic centimeters, not grams (the same volume as 1 millilitre).
Briefing :Direct measurement of a solid's volume is impossible. A solid, especially one with an irregular shape, has a higher potential for measurement error than a liquid.
To know more about Density visit:
https://brainly.com/question/6107689
#SPJ9
convert 360mL of hydrochloric acid into L
Does a reaction occur when aqueous solutions of potassium carbonate and nickel(ii) nitrate are combined?
Does a reaction occur when aqueous solutions of potassium carbonate and nickel(II) chloride are combined yes no If a reaction does occur.
What is potassium carbonate ?The inorganic substance K2CO3 is known as potassium carbonate. It is a soluble in water white salt. It is ethereal and frequently takes the form of a moist or damp solid. To make soap and glass, potassium carbonate is mostly employed.
The main component of potash, as well as the more refined pearl ash or tartar salts, is potassium carbonate. In the past, potash was baked to eliminate impurities and produced as pearl ash. It was the pearl ash that was left behind, a fine, white powder. Samuel Hopkins received the first patent ever granted by the United States Patent Office in 1790 for a better way to make potash and pearl ash.
To learn more about potassium carbonate from the given link:
https://brainly.com/question/874371
#SPJ4
The valence electron configuration for an unknown element is xs² xp, where x is an integer. Based on your knowledge of ion formation, predict the charge for the ion that would form when this element loses or gains electrons.
The element with electronic configuration xs² xp⁴ will gain 2 additional electrons resulting in the formation of an anion (negative ion), giving the element a charge of -2.
A charged atom is termed an ion and it is formed when an atom loses or gains electrons that are present in its outermost valence shell.
When an atom loses electrons, it turns into an anion and acquires a negative charge, whereas when it gains electrons, it turns into a cation and acquires a positive charge.
We now have an unknown element with the electronic setup xs² xp⁴. The electrical configuration shows that the element has four valence electrons in its outermost shell and requires two more electrons to complete its octet. As a result, the element will gain two more electrons, resulting in the formation of an anion (negative ion) with a charge of -2.
Note: Since losing four electrons is not possible, the element will gain electrons much more easily.
Read more about Electronic configuration:
https://brainly.com/question/19589767
#SPJ1
A major concern about increasing global temperatures is that a large portion of polar ice could detach and melt into the ocean. if this happened, which two spheres would interact? hydrosphere and atmosphere hydrosphere and atmosphere cryosphere and biosphere cryosphere and biosphere cryosphere and hydrosphere cryosphere and hydrosphere geosphere and atmosphere
Cryosphere and hydrosphere would interact.
There are five main Earth's spheres: the geosphere, the hydrosphere, the cryosphere, the biosphere and the atmosphere.
The hydrosphere is all the liquid water masses on the Earth.
The cryosphere is all the frozen water masses on the Earth.
In a high temperatures ice will turn into the liquid water and interact with each other.
The spheres interact with one other. For example, plants (biosphere) produce oxygen (atmosphere) from carbon dioxide (atmosphere).
Substances in different spheres are recycled and turned into other phases and forms. This is important cycle and without that, there is no life on Earth.
More about the hydrosphere: brainly.com/question/3167312
#SPJ4
Answer: Cryosphere and Hydrosphere
Explanation:
Cryosphere and hydrosphere would interact.
Cryosphere is the frozen water part of Earth. Hydrosphere is all the water on Earth's surface
crystals are made using supersaturated solutions of solids in water. these solutions hold more of the solute than they would at room temperature. how are these solutions made?
crystals are made using supersaturated solutions of solids in water. these solutions hold more of the solute than they would at room temperature.
An appropriate solution might be that the water might want to be heated to a better temperature, which might provide molecules and ions extra kinetic energy, growing solubility.
What are supersaturated solutions?
A solution that has extra solute dissolved in it in comparison to a saturated solution is referred to as a supersaturated solution. It may be organized with the aid of using including extra solute to an solution this is already saturated with the technique of heating in order that the solute may be effortlessly dissolved. These solutions are in a non-equilibrium state.
Supersaturated solutions maintain extra of the solute at better temperatures than they might at room temperature. Hence, an appropriate solution might be that the water might want to be heated to a better temperature, which might provide molecules and ions extra kinetic energy, growing solubility.
Generally, solubility will increase with boom in temperature. At better temperature, the kinetic energy of molecules in answer boom. Consequently, extra of the molecules/ions of solutes collide extra with every different and dissolve. At decrease temperature, the molecules of the solutes crystalize out in answer.
To learn more about supersaturated solutions from the given link below,
https://brainly.com/question/1052986
#SPJ4
Which qualification is not a specific criterion for classifying a substance as a neurotransmitter?
Tendency of the substance to travel long distances between the site of origin and target area is not a specific criterion for classify a substance as a neurotransmitter.
Neurotransmitters are the chemical messengers that are responsible for transporting chemical “messages” from one neuron to the subsequent target cell. The target cell may be a gland, muscle, or another nerve cell. Neurotransmitters are generally classified on the basis of their inhibitory or excitatory action.
Neurotransmitters plays major roles in controlling body functions like senses, breathing, heart beat, hormone regulation and blood pressure.
To learn more about Neurotransmitters , refer this link
https://brainly.com/question/840056
#SPJ4
which bonds often bind fifferent parts of a moleule into a specific three-dimensional shape, hydrogne, amino acid, oxyeng, or carbon?
The bonds that often bind different parts of a molecule into a specific three-dimensional shape is hydrogen.
What is specific three-dimensional shape?
In geometry, a 3-dimensional form may be described as a strong parent or an item or form that has 3 dimensions—length, width, and height. Unlike two-dimensional shapes, 3-dimensional shapes have height, that is similar to thickness or depth.
The bonds that often bind different parts of a molecule into a specific three-dimensional shape out of hydrogen, amino acid, oxygen and carbon, is hydrogen.
To learn more about specific three-dimensional shape from the given link below,
https://brainly.com/question/24115363
#SPJ4
which statement is true about alkali metals?
A. Some of them explode when exposed to water.
B. They aren't conductors of heat or electricity.
C. They're in group 18 of the periodic table.
D. They aren't very reactive
Answer:
answer is a . because they have enough heat is given off during exothermic reaction
Answer: answer is a . because they have enough heat is given off during exothermic reaction
Explanation:
d. Nucleus - storage of nutrients
5. Which laboratory procedure is represented in the diagram
below?
a.
b.
c.
Placing a coverslip over a specimen
Removing a coverslip from a slide
Adding stain to a slide without
removing the coverslip
d. Reducing the size of air bubbles
under a coverslip
6. While viewing a specimen under high power of a compa
be of
Often microscopic examination of a specimen involves many procedures to be followed, from slide preparation to adjust the focal length in the microscope. These steps are of paramount importance for microscopic examinations.
Reducing the size of air bubbles under the coverslip cannot be done easily after the coverslip is put over the specimen. Preferably a needle is used while cautiously putting the coverslip over the specimen to avoid air bubbles. Though adding stains along the edges may work for some time, it is better to do the step of covering with coverslip one again cautiously.
The given picture shows that it is option 4 that seems to be correct than options 1, 2, and 3. We often add stain or solution to a slide without removing the coverslip. Because to prevent air bubble formation and also to reduce excess stain, this method of stain addition is good.
Placing a paper towel to soak up excess liquid is good for the slide to look neat and tidy with even diffusion of stain throughout the coverslip. Thus it makes the observation via microscope very legible and clear with proper light adjustment.
Hence proper microscopic examination and the steps prior to it ( preparation of slides) are of paramount importance for one to excel in this field.
Learn more about microscope here:- https://brainly.com/question/820911
#SPJ9
a student put a bottle of water and a can of sugared soda in the freezer to chill them quickly . when she took them out , the bottle of water was frozen but the can of soda was not. explain why this happen
Answer:
it's because the liquid in the bottle is supercooled
Coordination complexes can have different types of isomers. compare the types of isomerism in another pair of related coordination complexes. how are these two complexes related to each other?
Isomers are formed when coordination complexes with two different ligands in the cis and trans positions of a ligand of interest. The octahedral[tex][Co (NH _{3} )_{4} Cl _{2} ] ^{+}[/tex] ion, for example, has two isomers. The two chloride ligands are adjacent to each other in the cis configuration.
Do coordination molecules have various isomers of different types?The isomers that coordination compounds display include many that are distinct as well as the same isomers that organic compounds display. Compounds known as isomers have distinct structural formulas but the same molecular formula and may not always have the same characteristics.
Which two sorts of isomers are there?Stereoisomerism and structural isomerism are the two basic types of isomerism (spatial isomerism). Structural isomers are isomers that differ in structure or kind of bond and have the same number of atoms of each kind but differ in how those atoms are connected to one another.
Learn more about coordination compound here:-
https://brainly.com/question/24315855
#SPJ4
How two jars marked with the same carbon hydrogen and oxygen content could taste so different?
One jar appears be much sweeter than other
In the two jar marked with the same carbon hydrogen and oxygen content could taste so different because carbohydrates contain just carbon, hydrogen and oxygen atoms that's why in the one jar it appear much sweeter taste than other and in the carbohydrates all are connected in the particular way carbohydrates are classified into three subtypes: monosaccharides, disaccharides, and polysaccharides That's why in two jar marked with the same carbon hydrogen and oxygen content could taste different.
Know more about carbon hydrogen and oxygen
https://brainly.com/question/28537285
#SPJ4
Multivitamin supplements contain minerals such as calcium, iron, gold, copper, and zinc. true false
Multivitamin supplements contain minerals such as calcium, iron, gold, copper, and zinc. The statement is false.
A multivitamin is a dietary supplement that contains vitamins, dietary minerals, and other nutritional components. These medications can be purchased as tablets, capsules, pastilles, powders, liquids, or injectable formulations.
According to Wong, the main function of a multivitamin is to close nutritional gaps and ensure that people get their recommended daily intake of minerals including calcium, magnesium, dietary fibre, potassium, choline, and underconsumed vitamins A, C, D, E, and K.
Therefore, multivitamin supplements contain minerals such as calcium, iron, gold, copper, and zinc. The statement is false.
Learn more about multivitamin here:
https://brainly.com/question/13738729
#SPJ4
Please help! will give brainlyst to 1st answer! help ASAP!!! 30 POINTS!!!!
Answer:
The answer to your question is D. 4.5 seconds hope this helps ;)
What is the molarity of a naoh solution if 15.5 ml of a 0.220 m h2so4 solution is required to neutralize a 25.0-ml sample of the naoh solution?
The molarity of NaOH is 0.8 M.
What is Molarity?Molar concentration, also known as molarity, is defined as the number of moles of solute present in a given number of liters of solution, or moles per liter of solution.
The balanced equation for the reaction is;
[tex]2NaOH(aq) + H_{2} SO_{4} (aq) --------- > NaSO_{4} (aq) +2 H_{2} O (l)[/tex]
Moles = concentration x volume
thus;
0.220M x 0.0155L= 0.01 moles of [tex]H_{2} SO_{4}[/tex].
Using the mole ratio;
Moles of NaOH = Moles of [tex]H_{2} SO_{4}[/tex].×2
= 0.02 Moles
Therefore; moles of NaOH = 0.02 moles
But; Concentration = moles / volume
Thus; Concentration of NaOH = 0.02 / 0.025L
= 0.8M
Learn more about mole concentration here:-
https://brainly.com/question/4184101
#SPJ4
What is the molarity of a naoh solution if 15.5 ml of a 0.220 m h2so4 solution is required to neutralize a 25.0-ml sample of the naoh solution?
The molarity of a NaOH solution is 0.273
How do we find the Molarity of NaOH solution?
The molarity of the NaOH solution used in the neutralization reaction has been 0.273 x [tex]10^{-3}[/tex] M.
The neutralization reaction has resulted in the formation of the salt and water on reacting an acid with a base. In the neutralization reaction, the strength of acid and base can be given as
For the neutralization of 1 mole of sulfuric acid, 2 moles of NaOH have been required.
[tex]2NaOH + H2SO4[/tex] →[tex]Na2SO4 + H2O[/tex]
The moles of sulfuric acid can be given as:
Moles = Molarity × Volume
Given, the molarity of acid (H2SO4) = 0.220 M
The volume of acid = 15.5 ml = 0.0155 L
Volume of base (NaOH) = 25 ml = 0.025 L
Moles of H2S04 = 0.220× 0.0155mol
Moles of H2SO4 = 3.41 mol.
Since 1 mole of H2SO4 = 2 moles NaOH
3.14 moles of H2SO4 = 3.14 × 2 moles NaOH
3.14 moles of H2SO4 = 6.28 moles of NaOH.
The neutralization of 0.220 M H2SO4 requires 6.28 moles of NaOH. The strength of the NaOH solution will be:
Molarity =[tex]\frac{Moles}{Volume(L)}[/tex]
Molarity = [tex]\frac{6.28}{0.025}[/tex]
The molarity of a NaOH solution is 0.273
To learn more about Molarity, refer
to https://brainly.com/question/24419453
#SPJ4
when the group of fatty acids reacts in a dehydration synthesis reaction with the group of glycerol, fats or oils are formed.
Fats or oils are created when the hydroxide group of glycerol combines in a dehydration synthesis process with the carboxyl group of fatty acids.
What are fatty acids?
The building blocks of fat in our bodies and the food we eat are called fatty acids. During digestion, the body transforms lipids into fatty acids so they may be absorbed into the bloodstream. A molecule known as a triglyceride is created when three fatty acid molecules are linked together.
Saturated, monounsaturated, and polyunsaturated fatty acids are all present in dietary fats. Even while meals include all three forms of fatty acids, they are frequently grouped according to the prevalent type.
To learn more about from the given link:
brainly.com/question/13528495
#SPJ4
an individual takes in 2,000 ml of water during the day. ideally they should lose ml of water during the day.
A person consumes 2,000 cc of water each day. They should generally lose 2,000 ml of water each day.
What is Water?The most of the Earth's hydrosphere is made up of water, which has the chemical formula H2O. Water is an inorganic, clear, flavorless, tasteless, and nearly colorless liquid that is also present in all known living things.The term "water" refers to the liquid state of H2O at standard pressure and temperature when the hydrogen atoms are connected to the oxygen atom at an angle of 104.45°.Even though it doesn't offer food, energy, or organic micronutrients, it is necessary for all currently understood forms of life. Its molecules have the chemical formula H2O and are formed up of two hydrogen atoms connected by covalent bonds.There is water everywhere in the natural world. It creates aerosols that resemble fog as well as rain-like precipitation.To know more about water visit:
https://brainly.com/question/19920929
#SPJ4
which is the hottest region of the bunsen burner flame? what is the approximate temperature of the flame? what is the commonly used gas in bunsen burner? what would happen to the flame if the air hole is closed? when heating glassware will you keep the air hole closed or open? explain.
The hottest part of the Bunsen flame, which is found just above the tip of the primary flame.
What is primary flame ?The main flame that gas welders employ is the neutral flame. There are two areas of a neutral flame: a hotter, lighter inner area and a cooler, darker outer area. A neutral flame produces a clean flame since the entire fuel gas is consumed during the operation.
The Bunsen flame's hotter region, immediately above the primary flame's tip, has a temperature of roughly 1,500 °C (2,700 °F). If there is insufficient air, the gas combination won't burn entirely and instead instead produce small carbon particles that, when heated to burning, give off light to create a brilliant flame.
Within the flame when burning hydrocarbon fuel, two processes are happening. The transformation of hydrogen and carbon into carbon monoxide and water is the first primary reaction. Carbon monoxide to carbon dioxide conversion is the secondary reaction; both are exothermic processes.
to learn more about primary flame go to -
https://brainly.com/question/21641459
#SPJ4
Atoms of which elements form bonds without satisfying the octet rule?
O potassium (K) and sodium (Na)
O neon (Ne) and argon (Ar)
• nitrogen (N) and fluorine (F)
• helium (He) and hydrogen (H)
Option (D) helium (He) and hydrogen (H) is the right answer.
The term "chemical compound" refers to a combination of two or more chemical elements, whether they are similar or dissimilar. For instance, the chemical compound H2O is made up of two oxygen atoms and one hydrogen atom.Ionic, covalent, and hydrogen bonds are the three basic types of chemical bonds that are used to generate these chemical compounds from their component atoms.Helium and hydrogen are exceptions to this octet rule because they do not require 8 electrons to finish their while forming the bond with another element, the valence shell.Most elements from the periodic table generally follow the octet rule when forming the bond with the other elements, which is to complete their outermost shell with eight electrons.Hence we can consider that Option(D)helium (He) and hydrogen (H) is the right answer.To learn more about octet rule visit:
https://brainly.com/question/865531
#SPJ9
Answer: Helium, Hydrogen
Explanation: I got it right
Which is true about about stable isotopes?
A stable nucleus has a similar number of protons and neutrons.
Isotopes are always unstable because they are radioactive.
Isotopes that are naturally occurring in nature are always unstable.
Isotopes with more neutrons than protons are always stable.
Isotopes are atoms with the same number of protons, but differ in numbers of neutrons.
Which is true about about stable isotopes?Isotopes are elements of the same family that have the same number of protons but different numbers of neutrons. Isotopes comprise of two or more than two types of atom that have the same atomic number but different mass number due to different number of neutrons in each element.
Isotopes are the members of elements which contains the same number of protons but they have different number of neutrons.
Isotope Of Hydrogen:
There are three isotopes of hydrogen i.e. protium 11H, deuterium 21H and tritium 31H. All these isotopes have one same number of proton which is 1 but different number of neutron.
The isotopes are different because of the different number of neutrons present in them.
So we can conclude that isotopes are atoms with the same number of protons, but differ in numbers of neutrons.
Learn more about Isotopes here: https://brainly.com/question/364529
#SPJ1
Answer:
A stable nucleus has a similar number of protons and neutrons.
Explanation:
Calculate the mass of khc8h4o4 that reacts with 15ml of the 0.15 m naoh solution.
The mass of khc8h4o4 that reacts with 15ml of the 0.15 m naoh solution is 0.4595 g
What is mass?
0.015 L x 0.15 M= 0.00225 mol NaOH, 0.00225 mol NaOH x 1 mol KHC8H4O4/1 mol NaOH=0.00225 KHC8H4O4, 0.00225 KHC8H4O4 x 204.23 g/mol/1 mol
KHC8H4O4=0.4595 g
Mass is a physical body's total amount of matter. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this term. The strength of an object's gravitational pull to other bodies is also influenced by its mass. The kilogram serves as the SI's fundamental mass unit.
Therefore,
To learn more about mass from the given link:
https://brainly.com/question/1658757
#SPJ4
of a certain compound , known to be made of carbon and hydrogen, and to have a molecular molar mass of , is burned completely in excess oxygen, and the mass of the products carefully measured:
The compound X that have a Molecular molar mass of 138 g/mol is
Given here,
Compound x - 6g
malar mass of x - 138g/mol
Carbon dioxide - 13.39 g
water - 2.35g
So,
The moles of Water will be 0.13 mol
The moles of Hydrogen will be 0.26
Mass of hydrogen = 0.26 g
The moles of CO2 will be 0.304
The moles of carbon will be 0.304
Mass of Carbon = 3.65 g
Mass of Oxygen = Total mass of the compound - (mass of C + mass of H)
= 6.0 g - ( 3.65 + 0.262 ) g
= 2.09 g
Moles of oxygen = 0.131
Since Oxygen has the least moles, to find the molar ratio of the constituent atom, divide the moles of an atom from oxygen.
C = 0.304/0.131 = 2.8
C = 0.26/0.131 = 2
C = 0.131/0.131 = 1
convert 2.3 into a whole number
C = 2.3*3 = 7
H = 2*3 = 6
O = 1*3 = 3
Hence formula will be C7H6O3
What is molar mass?
The molar mass of a chemical compound is determined in chemistry by dividing the mass of a sample of that compound by the quantity of that compound, which is the number of moles in that sample, measured in moles. The molar mass of a substance is a bulk attribute rather than a molecular one. The compound's molar mass is an average over numerous samples, which frequently have different masses because of isotopes. A terrestrial average and a function of the relative abundance of the isotopes of the constituent atoms on Earth, the molar mass is most frequently calculated using the standard atomic weights. For converting between a substance's mass and amount in bulk amounts, the molar mass is the proper unit.
To know more about molar mass go to the given link:
https://brainly.com/question/837939
#SPJ4
A solution is prepared by dissolving 42.9 g cesium chloride in 60.0 g water. the volume of the solution is 63.3 ml. calculate the mole fraction of cesium chloride.
The mole fraction of cesium chloride is 0.06296.
The mole fraction is the product of the number of molecules of a specific component in a mixture and its total molecular weight.
By mixing 60.0 g of water with 42.9 g of cesium chloride, a solution is created.
The volume of the solution is given as 63.3 ml.
The solute in this aqueous solution is cesium chloride. From their given masses and known molar masses, we require the moles of water and cesium chloride:
n( CaCl ) = 42.9 g × ( mol ) / ( 168.36 g )
n( CaCl ) = 0.254 mol
n( water ) = 60.0 g × ( mol ) / 18.01 g
n( water ) = 3.78 mol
Therefore, the mole fraction of cesium chloride solute will be:
( 0.254 mol ) / ( 0.254 mol + 3.78 mol ) = 0.06296
Learn more about solution here:
https://brainly.com/question/13133789?referrer=searchResults
#SPJ4
What descriptive term is applied to the type of diene represented by 2,4-hexadiene?.
Conjugated diene is applied to the type of diene represented by 2,4-hexadiene.
what is conjugated diene?
A chain of hydrocarbons known as a diene contains 2 double bonds, which may or may not be close to one another. This section compares two nearby double bonds with an emphasis on the delocalization of π systems. The configurations of these double bonds can influence how reactive and stable a molecule is.
2 double bonds and one single bond divide a conjugated diene into two halves.Nonconjugated (Isolated) Dienes have more least 1 single bond separating two double bonds.Two double bonds that are joined to the same atom to form cumulated dienes.Conjugated dienes are more stable than unconjugated and cumulated dienes because a molecule is more stable when it has a higher electron density delocalized.
To know more about conjugated diene visit:
https://brainly.com/question/24261651
#SPJ4
The complete question is :
What descriptive term is applied to the type of diene represented by 2,4-hexadiene?
A. Cumulated diene
B. Conjugated diene
C. Alkynyl diene
D. Isolated diene
E. None of the above
Which energy level has the highest amount of energy? A First B Second C Third D Fourth
The Energy levels that has the highest amount of energy is Fourth; option D
What are energy levels of electrons?
Energy levels or electron shells are fixed distances from the nucleus of an atom of an element where electrons are most probably to be found.
The energy levels are arranged in increasing energy levels from the nucleus of the atom.
The energy levels are given integer values of n, where n = 1, 2, 3, 4, 5,..
This means that the lowest energy level is the first one closest to the nucleus also known as ground state.
Therefore, the energy level which has the highest amount of energy from the given options is the fourth energy level.
In conclusion, electrons in atoms are arranged in energy levels starting from the first energy level closest to the nucleus.
Learn more about energy levels at: https://brainly.com/question/20561440
#SPJ1
1) Explain in as much detail as possible what the following balanced equation tells you. You answer should include information from the state symbols. P4(s) + 5 O₂(g) -> P4O10(S)
The following equation is in balance. To create one molecule of P₄O₁₀ (a solid)., combine one molecule of P₄ (a solid) with 5 molecules of O₂ (a gas)
How do you construct a balanced equation?The reactants and products are placed on the left and right sides of the arrow, respectively, to create a balanced equation. Coefficients, which appear as a number before a chemical formula, represent moles of a compound. The number of atoms in a single molecule is indicated by the subscripts (numbers below an atom).
What is an example of a balanced equation?For instance, think about the response: 2Mg(s)+O₂(g)⟶2MgO(g) Two magnesium and two oxygen atoms are present in this reaction on both the reactant and product sides. As a result, the chemical reaction complies with the rule of conservation of mass, making it a balanced chemical equation.
To know more about Balanced equation visit:
https://brainly.com/question/12192253
#SPJ9
When a forensic analyst determines the chemical composition of a preparation that may contain illicit drugs such as heroin, cocaine, or barbiturates, this is an example of what?.
this is an example of Identification
Technicians in forensic science work at crime scenes and in labs. Typically, forensic science technicians do the following tasks at crime scenes: Investigate crime scenes to decide what evidence needs to be gathered and how. The crime scene and the evidence should both be photographed. In forensic crime labs, forensic DNA analysts perform analyses on samples collected from crime scenes. While some forensic DNA analyzers work for privately owned forensic laboratories, the majority of them are employed by local, state, or federal law enforcement or governmental organizations. The definition of forensic analysis is a thorough procedure for identifying, looking into, and recording the cause, progression, and effects of a security incident or violation of local, state, and organizational regulations.
To know more about forensic analyst refer to https://brainly.com/question/23528771
#SPJ4
a chemist has a block of copper metal (density is 8.96 g/ml). they drop the metal into a graduated cylinder containing water, and find the volume change is 2.30 ml. what is the mass of the block, in grams?
The mass of the block is 20.61 grams.
d(copper metal) = 8.96 g/ml; density of a copper metal
V(copper metal) = 2.30 ml; the volume of a copper metal
m(copper metal) = d(copper metal) x V(copper metal)
m(copper metal) = 8.96 ml x 2.30 ml
m(copper metal) = 20.61 g; mass of a copper metal
Volume is the amount of space that a substance occupies.
Density is the mass of an object divided by its volume. The SI derived unit for density is the kilogram/cubic meter, but chemist usually use gram per milimeter.
Mass is a fundamental measure of the amount of matter in the object.
More about density: brainly.com/question/1354972
#SPJ4
Indium has two naturally occurring isotopes: indium-113 and indium-115. The relative atomic mass of indium is 114.82. Calculate the natural abundance of each isotope.
Answer:
114.818 amu.x(112.9041) + (1 - x)
(114.9039) = 114.818Solving for xx=0.043 or 4.3%
Explanation:
The average atomic mass written in the periodic table is determined from the relative abundances of the element's isotopes. The equation would be:Average Atomic Mass = ∑(Relative Abundance×Mass)Let be the relative abundance of Indium-113. Because there are only 2 isotopes, their relative abundances should equal to 1, such that the relative abundance for Indium-15 is (1-x). The atomic mass of indium is 114.818 amu.x(112.9041) + (1 - x)(114.9039) = 114.818Solving for x,x = 0.043 or 4.3%