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anyanavicka [17]
2 years ago
5

What is the percent by mass of magnesium inMgO a)20% b)50% c)40%d)60%

History
1 answer:
Oduvanchick [21]2 years ago
5 0

Answer:

d) 60%

Explanation:

Given the chemical formula;

MgO = Magnesium oxide.

First of all, we would determine the relative molecular mass (RMM) of MgO.

Atomic mass of Mg = 24

Atomic mass of O = 16

RMM (MgO) = 24 + 16 = 40 g/mol

Next, we would find the percent by mass of magnesium (Mg);

% Mg = 24/40 * 100

% Mg = 2400/40

% Mg = 60 percent.

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Novosadov [1.4K]

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Source: American Military History:

Volume 1

The weapons and battle tactics used by both sides during the Revolutionary War were consistent with those used by European armies for the previous 15 or so years. Both sides used similar weapons and fought using similar tactics.

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Explanation:

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Hope this helps

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