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posledela
3 years ago
7

Someone please help me with number 5. no idea what it is.

Chemistry
1 answer:
KATRIN_1 [288]3 years ago
5 0
Answer is Sodium Hydroxide.
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Which of the following has a mass of 10.0 g?
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Explanation:

To solve this problem, we must understand that;

     Mass  = number of moles x molar mass

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b 0.400 mol Ar             mass  = 0.4 x 40  = 16g

C 1.25 mol He               mass  = 1.25 x 4  = 5g

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Why is sodium metal (very soft and can cut easily) stored under oil?
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Limestone (CaCO₃) is the second most abundant mineral on Earth after SiO₂. For many uses, it is first decomposed thermally to quicklime (CaO). MgO is prepared similarly from MgCO₃.

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To learn more about Caco3, refer

brainly.com/question/26187973

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For which of the following conversions does the value of the conversion factor depend upon the formula of the substance?
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For which of the following conversions does the value of the conversion factor depend upon the formula of the substance?

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3 years ago
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