Vocabulary
Mole/mass relationship
Percent Composition
Density and STP
Misc.
100
What is the number of representative particles of a substance present in 1 mole of that substance called?
What is Avogadro's number
100
If a dozen Clementine oranges have a mass of 744 g, what will be the mass of 15 Clementines?
What is 930 g
100
What information is needed to calculate the percent composition of a compound?
What is the formula of the compound and the atomic mass of its elements
100
What is the mass in grams of 5.90 mol C8H18?
What is 673 g
100
How many atoms are in 0.075 mol of titanium?
What is 4.5 10^22
200
What is an atom, an ion, or a molecule, depending upon the way a substance commonly exists?
What is representative particle
200
How many moles of CaBr2 are in 5.0 grams of CaBr?
What is 2.5 x 10^-2 mol
200
If 60.2 grams of Hg combines completely with 24.0 grams of Br to form a compound, what is the percent composition of Hg in the compound?
What is 71.5%
200
The molar mass of a certain gas is 49 g. What is the density of the gas in g/L at STP?
What is 2.2 g/L
200
How many moles of silver atoms are in 1.8 10^20 atoms of silver?
What is 3.0 10^-4
300
What is the SI unit used to measure amount of substance called?
What is mole
300
For which of the following conversions does the value of the conversion factor depend upon the formula of the substance?
What is mass of any substance to moles
300
What is the percent composition of carbon, in heptane, C7H16?
What is 84%
300
What is the density at STP of the gas sulfur hexafluoride, SF6?
What is 6.52 g/L
300
Find the mass in grams of 3.10 x 10^23 molecules of F2.
What is 19.6 g F2
400
What is represented by 0C and 1 atm?
What is STP (Standard Temperature and Pressure)
400
The molar mass of a certain gas is 49 g. What is the density of the gas in g/L at STP?
What is 2.2 g/L
400
What is the mass of oxygen in 250 g of sulfuric acid, H2SO4?
What is 160 g
400
The molar mass of a substance can be calculated from its density alone, if that substance is a(n) ____.
What is gas at STP
400
Find the number of moles of argon in 607g of argon.
What is 15.2 mol
500
The lowest whole-number ratio of the elements in a compound is called the ____.
What is empirical formula
500
What is the number of moles in 432 g Ba(NO3)2?
What is 1.65 mol
500
How many representative particles are in 1.45 g of a molecular compound with a molar mass of 237 g?
What is 3.68 10^21 molecules
500
The molar volume of a gas at STP occupies ____.
What is 22.4 L
500
How many hydrogen atoms are in 5 molecules of isopropyl alcohol, C3H7O?
What is 35
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