give the symbol for an element that is 1) a transition metal in the fourth period from the following list: sc, n, nd, mt. fill in the blank 1 2) a metalloid. fill in the blank 2 3) a non-metal in group 4a, 5a, or 6a. fill in the blank 3 4) a lanthanide. fill in the blank 4 5) a metal in group 3a or 4a. fill in the blank 5

A person consumes 2,000 cc of water each day. They should generally lose 2,000 ml of water each day.

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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.

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.

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.

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The density of an element with a lattice perimeter of 0.45 nm and an atomic weight of 96.4 g/mol is 7.05 g/cm^3.

Based on the position of atoms in a solid, they are divided into many categories like simple cubic, face-centered cubic(fcc), body-centered cubic(bcc), etc.

In face centered cubic type of solid, the atoms are present at the corners and face center,  the effective number of atoms(Z) is 4.

The formula for the density of a solid is

Density = M x Z/ NA x a^3

Here M is the atomic weight of the metal= 96.4 g/mol

Z is the  number of atoms = 4

NA is the Avogadro number = 6.022 x 10^23

a is the lattice perimeter = 0.45 nm

Putting the given values in the equation,

Density = 7.05 g/cm^3.

Hence, the density of an element with a lattice perimeter of 0.45 nm and an atomic weight of 96.4 g/mol is 7.05 g/cm^3.

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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.

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A solution made from 35 ml of ethanol and 75 ml of water has volume percentage of ethanol is 35%.

Solution, in chemistry, homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility. The term solution is commonly applied to liquid state of matter, but solutions of gases and solids are possible. Air, for example, is a solution consisting chiefly of oxygen and the nitrogen with trace amounts of several other gases, and brass is a solution composed of copper and zinc.

Life processes depend in the large part on solutions. Oxygen from lungs goes into solution in the blood plasma, unites chemically with the hemoglobin in the red blood cells, and is released to the body tissues. The products of digestion also are carried in solution to different parts of the body. The ability of liquids to dissolve the other fluids or solids has many practical applications. Chemists take advantage of the differences in solubility to separate and purify materials and to carry out chemical analysis. Most chemical reactions occur in the solution and are influenced by the solubilities of the reagents. Materials for chemical manufacturing equipment are selected to resist solvent action of their contents.

Percentage of ethanol = 35/100=35%

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Answer:

The answer to your question is D. 4.5 seconds hope this helps ;)

The molarity of NaOH is 0.8 M.

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

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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%

The hottest part of the Bunsen flame, which is found just above the tip of the 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.

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Option (D) helium (He) and hydrogen (H) is the right answer.

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Answer: Helium, Hydrogen

Explanation: I got it right

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.

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Using henderson-hasselbach equation, the mass of sodium acetate(dry) is 0.2g and volumes of glacial acetic acid and dH₂O needed to prepare 50 mL of 0.2 M acetate buffer of pH 4.5 are  9.125 mL and 15. 875 mL

The Henderson-Hasselbach equation is :

             pH = pKₐ + log [A ⁻]

                                       [HA]

We have a pH 4.5 solution of acetic acid and sodium acetate. pKₐ of acetic acid is 4.75. Taking ratio of weak acid to conjugate base:

    4.5 = 4.75 + log [sodium acetate]

                                   [acetic acid]

 [Sodium acetate]   = 0.5623

    [acetic acid]

Now, number of moles of each component to be calculated.                                    

If total concentration is- 0.10 M, then:

            [HA] + 0.5754[HA] = 0       .10 M

            [HA] =           0.10            

                        1.0000 + 0.5754

             [A⁻] = 0.0365 M    

Total volume given is - 50 mL(50 mL= 0.050 L), so the moles of each component :

            nₐ₋ = 0.0365 mol   x 0.050 L = 0.001825 mol

                              L

            nhₐ =  0.0635 mol x 0.050 L = 0.003175 mol

                              L

Let the starting concentration were 0.20M, then we can find volume they both start with:

            Vₐ₋ =         1L           x 0.001825 mols A⁻ = 0.009125 L

                       0.20 mols A⁻

                   = 9.125 mL

            Vhₐ =          1L           x 0.003175 mols HA = 0.015875 L

                       0.20 mols HA

                   = 15.875 mL

To calculate mass of sodium acetate , using the equation:

pKₐ = -log Kₐ = -log 1.8 x 10⁻⁵ = 4.74 (kₐ of acetic acid is 1.8 x 10⁻⁵)

4.5 = 4.74 + log [acetate] / [acetic acid]

log[acetate] / [acetic acid] = -0.24

[acetate] / [acetic acid] = 0.182

x/0.2=0.182

x = [acetate] = 0.0364 M

0.0364 mol/L x 0.050 L x 136.08 g/mol = 0.247 g

Since the molarity is given to only one significant figure, answer can be reported as 0.2 g

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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) 

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).

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.

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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.

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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

The Energy levels that has the highest amount of energy is Fourth; option D

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.

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Does a reaction occur when aqueous solutions of potassium carbonate and nickel(II) chloride are combined yes no If a reaction does occur.

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.

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The similarities and differences between roller coaster rides and NASA plane training sims.

The forces are not sustained, as James Sebastian indicated, although being of approximately equal magnitude. This is what makes all the difference. The most physically taxing component of my high-performance aircraft flying is holding a turn at 6-8re or a G suit, you can quickly experience GLOC (G Induced LossG for anywhere between 10 and 20 seconds. Without the "hick" maneuver of Consciousness), which feels like your brain is being drained of blood. Consider that you will likely weigh as much as a small family automobile during those 20 seconds as well. We typically feel fatigued after a roller coaster flight since it is challenging and exhausting to move our limbs.

PS: Flying has destroyed skydiving and roller coasters.

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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,

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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.

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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.

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Fats or oils are created when the hydroxide group of glycerol combines in a dehydration synthesis process with the carboxyl group of 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.

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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.

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Answer:

it's because the liquid in the bottle is supercooled

Isotopes are atoms with the same number of protons, but differ in numbers of neutrons.

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.

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Answer:

A stable nucleus has a similar number of protons and neutrons.

Explanation:

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.

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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.

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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:

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.

Conjugated dienes are more stable than unconjugated and cumulated dienes because a molecule is more stable when it has a higher electron density delocalized.

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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

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.

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