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Lyrx [107]
3 years ago
5

Find the formula for calcium and oxygen

Chemistry
1 answer:
Veseljchak [2.6K]3 years ago
8 0
The charge on Calcium is +2. Since, Calcium oxide is a neutral compound, so the charge on Oxygen should be -2. <span>Valency of Oxygen is 2, so a single Oxygen atom can satisfy the need.

Therefore,  formula is CaO.</span>
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How many miles of MgCI2 are there in 345 g of the compound?
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MgCl2
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3.6 moles
8 0
2 years ago
Calculating molarity using solute moles A chemist prepares a solution of sodium chloride (NaCl) by measuring out 6.89 mol of sod
hram777 [196]

Answer: Concentration of the chemist's sodium chloride solution is 34.4 mol/L.

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

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Thus the concentration of the chemist's sodium chloride solution is 34.4 mol/L.

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