Answer:
The theory that cells are the basic structural, functional, and organizational units of both single-celled and multicellular organisms; cells divide and pass on hereditary information; and energy flows within cells.
Explanation:
The force resulting from oppositely charged poles is ...
Radiation from which type of decay has the least energy?
A. Electromagnetic decay
B. Beta decay
C. Alpha decay
D. Gamma decay
SUBMIT
Radiation from alpha decay has the least energy.
Alpha decay is the name for the nuclear process that releases alpha particles. Two protons that were lost by the uranium atom are present in the alpha particle. Additionally, the two protons have a +2 charge. The particle's mass, or the sum of its protons and neutrons, is represented by the top number, 4, in this case. Alpha particles must also have two neutrons because they have two protons, making a total of four protons and neutrons. Two protons and two neutrons are the constant components of alpha particles.
A nuclear process known as "alpha decay" releases a particle made up of two protons and two neutrons when an unstable nucleus transforms to another element. The helium nucleus that is being ejected is known as an alpha particle.
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Answer:
C) Alpha decay
Explanation:
Alpha decay, beta decay, electromagnetic decay, Gamma decay
its least to greatest
ammonia NH3 percentage composition
Answer:
82.24% percent composition of N and 17.76% percent composition of H .
Explanation:
HELP NOW! What happens during the process of digestion?
Answer:
As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the stomach
Answer:
Food contents that the animal or creature has swallowed goes into the stomach. The contents gets broken down. The energy from the contents will then go through the body.
The point at which liquid absorbs enough energy to rapidly become a gas is known as the ____?
Answer:
Cycle
Explanation:
How do gut bacteria help people?(1 point)
A
by making enzymes to break down food
B
by causing a variety of digestive disorders
C
by releasing compounds that kill harmful bacteria
D
by training other bacteria to treat infection
Answer: the answer would be B
1. if 100 ML of a 12.0 M HCL solution is diluted to 2.00 L, what is the molarity of the final solution?
If 5.48 g of CuNO3 is dissolved in water to make a 0.840 M solution, what is the volume of the solution in milliliters?
Answer:
34.8 mL
Explanation:
First we convert 5.48 g of CuNO₃ into moles, using its molar mass:
5.48 g CuNO₃ ÷ 187.56 g/mol = 0.0292 molNow we can calculate the volume of the solution, using the definition of molarity:
Molarity = moles / liters0.840 M = 0.0292 mol / litersliters = 0.0348 LFinally we convert L into mL:
0.0348 L * 1000 = 34.8 mLQuestion 21
1 pts
Is the following chemical equation balanced or unbalanced?
2 Na + HCI
-->
H2 + NaCl
Balanced
Unbalanced
Answer:
Unbalanced
Explanation:
The reactants side says 2Na. This means there should also be 2Na on the product's side. However, there is only 1 Na there. Therefore, the chemical equations are unbalanced.
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Iron reacts with chlorine gas, Cl2, to form iron(III) chloride, FeCl3
Write the balanced equation for this synthesis reaction.
Answer:
2Fe + 3Cl2 --> 2 FeCl3
Explanation:
Fe + Cl2 --> FeCl3
iron is balanced but chlorine isn't so we find what number can make each one equal
Fe +3Cl2 --> 2FeCl3
now we need to balance iron
2Fe + 3Cl2 --> 2 FeCl3
Which has a greater atomic radius silicon or magnesium
during the combustion of methane (CH4), one mole of methane gas combines with two moles of oxygen gas (O2) to produce one mole of carbon dioxide gas (CO2) and two moles of water vapor. Which of the following chemical equations correctly represents the combustion of methane described above?
a)CH4(g) + 2O(g) ↔ CO2(g) + 2H2O(g)
b)CH4(g) + 2O(g) ↔ CO(g) + 2H2O(l)
c)CH4(g) + 2O2(g) ↔ CO2(g) + 2H2O(g)
d)CH4(g) + 2O2(g) ↔ CO(g) + 2H2O(l)
Answer:
a) cH4(g) +2O(g)__ CO2(g) +2H2O(g)
I hope this help
how many molecules are in 2.1 moles of carbon monoxide
Answer:
[tex]1.26*10^2^4[/tex]
Explanation:
To find molecules, we will need to multiply the number of moles of carbon monoxide by Avogadro's number. Avogadro's number is [tex]6.022*10^2^3[/tex].
So the equation would look like this:
[tex](2.1) * (6.022*10^2^3) = 1.26 *10^2^4[/tex]
How can we be more careful with how we use natural resources?
If the energy of a photon of light is 3.37 x 10–19 J, what is the frequency of the light? A. 1.12 x 10–27 s –1 B. 8.90 x 1026 s –1 C. 5.09 x 1014 s –1 D. 6.70 x 10–44 s –1 E. 1.01 x 10–10 s –1
Answer:
The appropriate alternative is option C "[tex]5.09\times 10^{14} \ s[/tex]".
Explanation:
The given value is:
Energy of photon,
E = [tex]3.37\times 10^{-19} \ J[/tex]
As we know,
h = [tex]6.626\times 10^{-34} \ Js[/tex]
Now,
The frequency of the light will be:
⇒ [tex]E=hv[/tex]
On substituting the given values, we get
⇒ [tex]3.37\times 10^{-19}=6.626\times 10^{-34}\times v[/tex]
On solving, we get
⇒ [tex]v=5.09\times 10^{14} \ s[/tex]
If the energy of a photon of light is 3.37 x 10⁻¹⁹ J, then the frequency of the light is 5.09 x 10¹⁴ per sec.
How we calculate frequency?Frequency of light will be calculated by using the below formula:
E = hυ, where
E = energy of photon = 3.37 x 10⁻¹⁹ J
h = plank's constant = 6.626 × 10⁻³⁴ Js
Putting these values on the above equation and calculate for the frequency as:
υ = 3.37 x 10⁻¹⁹ J / 6.626 × 10⁻³⁴ Js = 5.09 x 10¹⁴ per sec
Hence, option (C) is correct i.e. 5.09 x 10¹⁴ per sec.
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An element has 35 protons, 36 electrons, and 45 neutrons. This is called a(n)
meaning
because there are
electrons compared to protons.
Protons and neutrons are particles that make up the dense nucleus at the center of an atom. Protons have a positive electric charge, and neutrons have no electric charge (i.e., neutrons are electrically neutral).
Electrons are particles that are found surrounding the nucleus; electrons have a negative electric charge.
The magnitude of a proton's positive charge and an electron's negative charge are equal in magnitude. All they differ in is in their polarity.
So, an atom that has the same number of protons and electrons would be electrically neutral. An ion is an atom that has a non-neutral charge because of an imbalance between the number of protons and electrons. If there are more electrons than protons, there is a net negative charge, and this type of ion is called an anion; if there are fewer electrons than protons, there is a net positive charge, and this type of ion is called a cation.
In this case, we have an element (or, more precisely, an atom of an element) that has 35 protons, 36 electrons, and 45 neutrons. There is one more electron than there are protons. This is called an anion because there are fewer electrons compared to protons.
Considering the definition of ion, cation and anion, this is called an anion because there are more electrons compared to protons.
All atoms are composed of a central nucleus in which there are particles with a positive electric charge, the protons, around which other particles with a negative electric charge that are electrons move. Thus, the atom is electrically neutral, since the positive charge of the protons is compensated by the negative charge of the electrons.
On the other hand, an ion is a particle with an electrical charge obtained by adding or removing electrons from atoms or molecules.
An electron-deficient atom or molecule has a positive charge and is called a cation; On the other hand, when there are excess electrons, the ion has a negative charge and is called an anion.
In other words, if an atom, or atoms, does not have a balanced number of negatively charged electrons and positively charged protons, these species will be charged and are called ions.
A cation has more protons than electrons, giving it a net positive charge. For a cation to form, one or more electrons must be lost.
An anion has more electrons than protons, which gives it a net negative charge. For an anion to form, one or more electrons must be gained.
In this case, an element has 35 protons, 36 electrons, and 45 neutrons. This is called an anion because there are more electrons compared to protons.
Learn more:
https://brainly.com/question/980691?referrer=searchResultshttps://brainly.com/question/1995443?referrer=searchResultswhy is the counting unit called mole useful in chemistry
Answer:
Explanation:El mol es una unidad conveniente de usar debido a la gran cantidad de átomos, moléculas u otros en cualquier sustancia.
19. Give the meaning of each of the following symbols when used in a chemical equation.
a →
b.
c. (5)
d
e. (1)
f. (aq)
h. 1
Calyst
k Pressure
Match each energy transformation to the correct image. ANSWER FAST PLS!!! THIS IS FOR 20 POINTS!!! AND I WILL MARK BRAINLIEST IF CORRECT!!! this is on edementum btw
The Light Is- Electric To Radiant
Car Battery- Chemical To Electric
Wind Thingy- Motion To Electric
Fan- Electric To Motion
Guitar- Electric To Sound
Hope This Helps!!
If you have 1.8 moles, how many atoms would you have?
Answer: 1.08×10^24 atoms
I need help with this question!!
Answer:
A. 15
Explanation:
From the equation we see that 6 water particles are used to make 1 particle of the hexose.
That means, that to make 1 mole of the hexose, we need 6 moles of water (as a mole is an unit of count of particles).
To make 2.5moles of the hexose, we need 2.5*6 moles of water, so 15 moles of water.
The Haber process for making ammonia can be described by the balanced equation,
3 H2 + N2 ---> 2 NH3 , with all species in the gas phase.
If I have 376 grams of nitrogen gas and 36 moles of hydrogen gas what is the maximum mass of ammonia I can produce ?
Answer:
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which particle has the least mass
a. electron
b. proton
c. neutron
d. all have the same mass
Answer:
b. proton
Explanation:
The mass of an electron is only about 1/2000 the mass of a proton or neutron, so electrons contribute virtually nothing to the total mass of an atom. Electrons have an electric charge of −1, which is equal but opposite to the charge of a proton, which is +1.
what is the electronic configuration of the atom x
Answer: K L M. 2 8 6.
Explanation:
How many particles are in 5.00 grams of nitric acid?
Answer:
0.0500
Explanation:
What is the molality of a solution containing 30.0 g of napthalalene (C10H8) dissolved in 500.0 g of toulene? Please provide work. Thanks in advance!
Answer:
0.468 m
Explanation:
From the question given above, the following data were obtained:
Mass of napthalalene (C₁₀H₈) = 30 g
Mass of toulene = 500 g
Molality =?
Next, we shall determine the number of mole in 30 g of C₁₀H₈. This can be obtained as follow:
Mass of C₁₀H₈ = 30 g
Molar mass of C₁₀H₈ = (12×10) + (8×1)
= 120 + 8
= 128 g/mol
Mole of C₁₀H₈ =?
Mole = mass / molar mass
Mole of C₁₀H₈ = 30 / 128
Mole of C₁₀H₈ = 0.234 mole
Next, we shall convert 500.0 g of toulene to Kg. This can be obtained as follow:
1000 g = 1 Kg
Therefore,
500 g = 500 g × 1 Kg / 1000 g
500 g = 0.5 Kg
Finally, we shall determine the molality of the solution. This can be obtained as follow:
Mole of solute (C₁₀H₈) = 0.234 mole
Mass of solvent (toulene) = 0.5 Kg
Molality =?
Molality = mole of solute / Kg of solvent
Molality = 0.234 / 0.5
Molality = 0.468 m
Which of the following on the periodic table corresponds to a principal energy level?
Group of answer choices
representative elements
transition elements
group
period
Answer:
representative elements
Answer: transition element
Explanation:
global warming is caused by an increase in the level of carbon dixode gas in the atmosphere. How has this affected the world's oceans?
10. The electronic configuration of two elements X and Y are given below:
Зр
An
8p
compound.
Answer:
Pppppppp pppppppp pppppppp pppppppp
if you help me, you are the best
Answer:
The following numbers are true for protons:
2.
5.
7.
Explanation:
I know for a fact that Protons have a positive charge
they are located inside of the nucleus
Go.ogle says that they aren't involved in bonding
And it says that it has a mass of one
I hope this helps chu <3