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4 years ago

When an electron is added, the ion is called?______

Chemistry

2 answers:

torisob [31]4 years ago

8 0

Answer:

Anion

Explanation:

Positive ions are called cations: they give out

Negative ions are called anions: they always receive

Andrei [34K]4 years ago

6 0

Answer

anion

Explanation:

When an electron is added or gained, it forms a negative ion called the anion.

This makes it have more electron than the proton making it negatively charged .

Examples are chloride, bromide, fluoride which has minus 1 has their charge

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3 years ago

A compound consists of 75% magnesium and 25% oxygen. Find the empirical formula.

laila [671]

<h2>Answer:</h2>

% Composition of elements:

Magnesium = 75%
Oxygen = 25%

Atomic mass of given elements:

Magnesium = 24 g
Oxygen = 16 g

Now, divide % composition by Atomic mass:

$\footnotesize\implies Mg = \dfrac{\% \: Composition}{Atomic \: mass} = \dfrac{75}{24} = \bf 3.125$

$\footnotesize\implies O = \dfrac{\% \: Composition}{Atomic \: mass} = \dfrac{25}{16} = \bf 1.5625$

Simplest Ratio:

$\footnotesize\implies Mg = \dfrac{3.125}{1.5625} = 2$

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Empirical Formula:

$\footnotesize\implies \underline{ \boxed{ \red{ \bf Empirical \: Formula = Mg_2O}}}$

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3 years ago

If you want to prepare 2.00 L of a 0.800 M NaNO_3 solution from a NaNO_3 stock solution that is 1.5 M in concentration, how many

Leya [2.2K]

1066.7 ml of the stock solution must start with, preparing 2.00 L of a 0.800 M NaNO3 solution.

<h3>What is volume?</h3>

Volume is the space occupied by a three-dimensional object.

By the formula $\rm M_1V_1= M_2V_2$

M1 is the initial molarity, 1.5 M

M2 is the final molarity, 0.800 M

V1 is the initial volume

V2 is the final volume, 2.00 L

Putting the values in the equation

$\rm 1.5\;M \times V_1= 0.800\;M \times 2.00\;L\\\\V_1 = \dfrac{ 0.800\;M \times 2.00\;L}{1.5\;M} = 1066.7\;ml$

Thus, the initial volume is 1066.7 ml

Learn more about volume

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3 years ago

What is the percent yield of water from the combustion of propane (C3H8), if my theoretical yield is 8.17g of water and my actua

Naddik [55]

Answer:

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Explanation:

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