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melisa1 [442]
3 years ago
15

Which of the following statements is true a A) dams are made of molecules B) Adams can join to form molecules C) atoms contain m

ore than one element D) some atoms do not have protons
Chemistry
1 answer:
Jobisdone [24]3 years ago
5 0
Statement B is true because atoms are single particles that come together to form compounds and molecules.
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Answer:

n=1.732mol

\% N=18.7\%

Explanation:

Hello!

In this case, since the molecular formula of glycine is C₂H₅NO₂, we realize that the molar mass is 75.07 g/mol; thus, the moles in 130.0 g of glycine are:

n=130.0g*\frac{1mol}{75.07 g}\\\\ n=1.732mol

Furthermore, we can notice 75.07 grams of glycine contains 14.01 grams of nitrogen; thus, the percent nitrogen turns out:

\% N=\frac{14.01}{75.07}*100\% \\\\\% N=18.7\%

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