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2 years ago

How many molecules are in 2.50 moles of co2

Chemistry

2 answers:

lapo4ka [179]2 years ago

6 0

Explanation:

There are 1.51 x 1024 molecules of carbon dioxide in 2.50 moles of carbon dioxide.

zmey [24]2 years ago

4 0

Answer:

$1.51 \times 1024 \: \: molecules$

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Given that sodium chloride is 39.0% sodium by mass, how many grams of sodium chloride are needed to have 100.mg of Na present? G

seraphim [82]

<u>Answer:</u> The mass of sodium chloride solution present is 0.256 grams.

<u>Explanation:</u>

We are given:

39.0 % of sodium in sodium chloride solution

This means that 39.0 grams of sodium is present in 100 grams of sodium chloride solution

Mass of sodium given = 100 mg = 0.1 g (Conversion factor: 1 g = 1000 mg)

Applying unitary method:

If 39 grams of sodium metal is present in 100 grams of sodium chloride solution

So, if 0.1 grams of sodium metal will be present in = $\frac{100}{39}\times 0.1=0.256g$ of sodium chloride solution.

Hence, the mass of sodium chloride solution present is 0.256 grams.

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3 years ago

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abruzzese [7]

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Explanation:

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2 years ago

Mapping the ocean floor did not provide any new evidence for the theory of continental drift.

777dan777 [17]

False. ......................................

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2 years ago

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What happens to the matter in the body of an animal after it dies

sladkih [1.3K]

The matter will be consumed by other living organisms and the blood will settle to the bottom of the body

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3 years ago

Which process releases energy that eventually produces lightning in the thunderstorm?

Ira Lisetskai [31]

Answer:

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Explanation:

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3 years ago