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Ksenya-84 [330]
3 years ago
11

Help asap pls, this is due in 30 minutes.

Chemistry
2 answers:
jeka943 years ago
4 0

Answer:

I'm not sure sorry

Explanation:

all I know is calcium=1 carbon=1 oxygen=3➡️calcuim=1 oxygen=1+carbon=1 oxygen=2

so overall answer would be (5➡️2+3) so mabey 5+5=10

viktelen [127]3 years ago
3 0
The other boy has a good answer
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Answer:

The molar mass of the metal is 54.9 g/mol.

Explanation:

When we work with gases collected over water, the total pressure (atmospheric pressure) is equal to the sum of the vapor pressure of water and the pressure of the gas.

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PH₂ = Patm - Pwater = 1.0079 bar - 0.03167 bar = 0.9762 bar

The pressure of H₂ is:

0.9762bar.\frac{1atm}{1.013bar} =0.9637atm

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P.V=n.R.T\\n=\frac{P.V}{R.T} =\frac{0.9637atm \times 0.249L }{(0.08206atm.L/mol.K)\times298K} =9.81 \times 10^{-3} mol

Let's consider the following balanced equation.

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\frac{0.539g}{9.81 \times 10^{-3} mol} =54.9g/mol

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Answer:

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