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4 years ago

What decides if an atom will be a cation or an anion?

Chemistry

1 answer:

JulijaS [17]4 years ago

7 0

The loss or gain of electrons

Explanation:

The loss or gain of electrons determines if an atom will become a cation or anion.

A cation is a positively charge ion

An anion is a negatively charged ion.

In an atom, we have sub-atomic particles:

Protons are the positively charged particles

Electrons are negatively charged

Neutrons carry no charges

Only electrons can be lost or gained in chemical processes that forms cations and anions.

When a neutral atom gains electron, it has more electrons than protons. This makes it negatively charged and we call it an anion.

When a neutral atom loses an electron, the number of protons is more. We call it a cation.

Learn more:

Cations brainly.com/question/4670413

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How many mL of a 15% acid solution and how many mL of a 3% acid solution must be mixed to get 45 mL of a 7% acid solution?

madam [21]

Answer:

15 mL of 15% acid solution and 30 mL of 3% acid solution

Explanation:

The total number of moles of the mixture $(n_{3})$ is equivalent to the addition of the number of moles of the first solution $(n_{1})$ and the number of moles of the second solution $(n_{2})$ . Mathematically,

$n_{1} +n_{2} = n_{3}$

$n_{1} = V_{1}*C_{1}$

$n_{2} = V_{2}*C_{2}$

$n_{3} = V_{3}*C_{3}$

The volume of the mixture = 45 mL

The volume of first solution = x

The volume of second solution = 45 - x

Therefore:

0.15x + 0.03(45-x) = 0.07*45

0.15x + 1.35-0.03x = 3.15

0.12x = 1.8

x = 15

Thus, the volume of the first solution is 15 mL while the volume of the second solution is 30 mL.

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3 years ago

On a hot day, a student places a glass of cold lemonade on a table outdoors. After a few minutes, water droplets have formed on

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Answer:

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4 years ago

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A quantity of CO gas occupies a volume of 0.32 L at 0.90 atm and 323 K . The pressure of the gas is lowered and its temperature

Contact [7]

Mathematical formula of Ideal Gas Law is PV=nRT
where: P-pressure,
V-volume
n-number of moles; m/MW
T-Temperature
m-mass
d-density ; m/V
MW-Molecular Weight
R- Ideal Gas constant. If the units of P,V,n & T are atm, L, mol & K respectively, the value of R is 0.0821 L x atm / K x mol

Substituting the definitions to the original Gas equation becomes:
d= P x MW / (RxT)

Solution : d= .90atm x 28 g/mol (CO) / 0.0821Lxatm / mol x K x 323 K

d = 25.2 g / 26000 mL

d = .0.00096 g/mL is the density of CO under the new conditions

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4 years ago

An experiment shows that a 236 mL gas sample has a mass of 0.443 g at a pressure of 740 mmHg and a temperature of 22 ∘C. What is

aleksley [76]

Answer:

49.2 g/mol

Explanation:

Let's first take account of what we have and convert them into the correct units.

Volume= 236 mL x ( $\frac{1 L}{1000 mL}$ ) = .236 L