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Chapter 9: Problem 8

What is the mass in grams of 2 moles of propane?

Short Answer

Expert verified
The mass of 2 moles of propane is approximately 88.22 grams.

Step by step solution

01

Find the atomic masses of carbon and hydrogen

Refer to the periodic table to find the atomic masses of carbon (C) and hydrogen (H). The atomic mass of carbon is approximately 12.01 g/mol, and the atomic mass of hydrogen is approximately 1.01 g/mol.
02

Calculate the molecular weight of propane (C3H8)

To calculate the molecular weight of propane, add up the atomic masses of all the atoms in the molecule. Molecular weight of propane = (3 * atomic mass of carbon) + (8 * atomic mass of hydrogen) Molecular weight of propane = (3 * 12.01 g/mol) + (8 * 1.01 g/mol) = 36.03 g/mol + 8.08 g/mol ≈ 44.11 g/mol
03

Multiply the molecular weight by the number of moles

Now, to find the mass of 2 moles of propane, multiply the molecular weight of propane (44.11 g/mol) by the number of moles (2). Mass of 2 moles of propane = (2 moles) * (44.11 g/mol) = 88.22 g
04

State the answer

The mass of 2 moles of propane is approximately 88.22 grams.

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Most popular questions from this chapter

A \(2.000 \mathrm{~g}\) sample of a liquid compound that contains only carbon and hydrogen in its formula is subjected to combustion analysis. From the result, the lab determines that \(0.2874 \mathrm{~g}\) of the original sample's mass is due to hydrogen. (a) What is the percent by mass hydrogen for this sample? (b) What is the empirical formula for this compound? (c) The molar mass of this compound is determined to be about \(71 \mathrm{~g} / \mathrm{mol}\). What is the molecular formula for this compound?

If you have \(200.0 \mathrm{~g}\) of dinitrogen pentoxide, how many atoms of nitrogen do you have? How many atoms of oxygen do you have?

(a) What is the molar mass of ribose \(\left(\mathrm{C}_{5} \mathrm{H}_{10} \mathrm{O}_{5}\right)\) ? (b) What is the mass of \(3.87\) moles of ribose? (c) How many ribose molecules are there in \(3.87\) moles? (d) How many oxygen atoms are there in \(3.87\) moles of ribose? (e) What is the mass in grams of the oxygen atoms in part (d)?

Consider the unbalanced chemical equation \(\mathrm{KCl}+\mathrm{O}_{2} \rightarrow \mathrm{KClO}_{3}\) If you react \(42.6 \mathrm{~g}\) of \(\mathrm{KCl}\) and \(36.5 \mathrm{~g}\) of \(\mathrm{O}_{2}\) and the reaction has a percent yield of \(56.0 \%\), how many grams of \(\mathrm{KClO}_{3}\) are produced?

Which has the greatest mass: 1 mole of ethylene gas \(\left(\mathrm{C}_{2} \mathrm{H}_{4}\right), 1\) mole of carbon monoxide gas, or 1 mole of nitrogen gas \(\left(\mathrm{N}_{2}\right) ?\)
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