Calculate the molecular weight of C 3 H 5 N 3 O 3 .

So here this practice question says, calculate the molecular weight of c 3h5m303. So first we're gonna count out how many we have of each element. So we have 3 carbons, 5 hydrogens, 3 nitrogens, and 3 oxygens. Next, we look up on the periodic table each of their atomic masses. So on the periodic table carbon weighs 12.01 grams per mole, hydrogen is 1.008 grams per mole, nitrogen is 14.01 grams per mole, and then finally oxygen is about 16 grams per mole. On your periodic table you might see it as 15.999, or for oxygen we're just gonna round up to 16. When we multiply these numbers we get 36.03 grams per mole, we get 5.040 grams per mole, we get here 42.03 grams per mole, and then finally 48 grams per mole. Here we're not worrying too much about significant figures or at least decimal places when counting or multiplying and all that. We're just concerned with finding out what the molecular weight will be. So when we add that up, that gives us 131.10 grams per mole as the molecular weight of this compound. So just remember to use the steps that we learned previously to identify the molar mass or molecular weight of any compound given to you.

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1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
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13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
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6. Chemical Reactions & Quantities

Calculating Molar Mass

GOB Chemistry

6. Chemical Reactions & Quantities

Calculating Molar Mass

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Multiple Choice

Calculate the molecular weight of C₃H₅N₃O₃.

123.80 g/mol

131.10 g/mol

136.90 g/mol

147.10 g/mol

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Verified step by step guidance

Identify the elements present in the compound C3H5N3O3: Carbon (C), Hydrogen (H), Nitrogen (N), and Oxygen (O).

Determine the number of each type of atom in the molecular formula: 3 Carbon atoms, 5 Hydrogen atoms, 3 Nitrogen atoms, and 3 Oxygen atoms.

Find the atomic weight of each element from the periodic table: Carbon (C) is approximately 12.01 g/mol, Hydrogen (H) is approximately 1.01 g/mol, Nitrogen (N) is approximately 14.01 g/mol, and Oxygen (O) is approximately 16.00 g/mol.

Calculate the total weight contributed by each type of atom by multiplying the number of atoms by their respective atomic weights: (3 * 12.01 g/mol) for Carbon, (5 * 1.01 g/mol) for Hydrogen, (3 * 14.01 g/mol) for Nitrogen, and (3 * 16.00 g/mol) for Oxygen.

Add the total weights of all the atoms together to find the molecular weight of C3H5N3O3.