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aleksandrvk [35]
3 years ago
5

Please Help Me Answer Numbers 7, 9, 10, and 11!

Chemistry
1 answer:
CaHeK987 [17]3 years ago
5 0
Add a 8 kid and u are just adding
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4 years ago
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Find the mass of 3.90*10^23 molecules of carbon dioxide
enyata [817]

Answer: 28.5 g

Explanation:

1 mole of every substance contains Avogadro's number of particles and weighs same as it's molecular weight.

Here 1 mole of CO_2 contains 6.023\times 10^{23} molecules of CO_2 and it weighs 44g

6.023\times 10^{23} molecules weigh 44g

3.90\times 10^{23} molecules weigh = \frac{44g}{6.023\times 10^{23}}\times 3.90\times 10^{23}

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16 protons

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4 years ago
Which compound contains both ionic and covalent bonds?
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