Chapter 7: Problem 63
How many atoms of Fe are in the formula \(\mathrm{Fe}_{3} \mathrm{C} ?\) How many moles of Fe are in one mole of \(\mathrm{Fe}_{3} \mathrm{C}\) ?
Chapter 7: Problem 63
How many atoms of Fe are in the formula \(\mathrm{Fe}_{3} \mathrm{C} ?\) How many moles of Fe are in one mole of \(\mathrm{Fe}_{3} \mathrm{C}\) ?
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Get started for freeOleic acid has the empirical formula \(\mathrm{C}_{9} \mathrm{H}_{17} \mathrm{O} .\) If the experimental molar mass is \(282 \mathrm{g} / \mathrm{mol},\) what is the molecular formula of oleic acid?
Which has the greater number of molecules: 10 g of \(N_{2}\) or 10 g of \(\mathrm{O}_{2} ?\)
A scientist collects a sample that has \(2.00 \times 10^{14}\) molecules of carbon dioxide gas. How many grams is this, given that the molar mass of \(\mathrm{CO}_{2}\) is 44.01 \(\mathrm{g} / \mathrm{mol}\) ?
How many molecules in 2.00 \(\mathrm{mol}\) of sucrose, \(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11} ?\)
a. Determine the percentage composition of propane, \(\mathrm{C}_{3} \mathrm{H}_{8} .\) b. Make a pie chart for propane using a protractor to draw the correct sizes of the pie slices. (Hint: A circle has \(360^{\circ} .\) To draw the correct angle for each slice, multiply each percentage by \(360^{\circ} . )\) compare the charts for methane, ethane, and propane. How do the slices for car- bon and hydrogen differ for each chart?
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