What's a mole?
How many atoms are in one mole?
602 hexillion (6.02 x 1023)
What is the mass of 2.5 moles of oxygen?
~ 40 grams
What is the unit for molar mass
grams per mole, or g/mol
Which atom is heaviest, which is lightest: calcium, silver, fluorine
Silver is heaviest, Fluorine is lightest
If you had two moles of atoms, how many would you have?
1204 hexilion (1.204 x 1024)
A copper pipe is 410 g. How many moles of copper does it contain?
6.45 moles
What is the molar mass (with correct unit) of chlorine?
35.453 g/mol
When comparing the relatice mass of objects, it is important that two samples have:
a) the same mass
b) the same number of objects
c) the same volume
d) the same container
b) the same number of objects
6.022 x 1023 is also called _________'s number, named after an accomplished chemist.
Avogadro's Number
Which is heavier - 1 mole of iron or 3 moles of carbon?
1 mole of iron (with a mass of 55.845 g)
Which element has a molar mass of 58.693 g/mol
Nickel
How much heavier is a carbon atom, compared to a helium atom?
About 3x heavier
What has more atoms - a mole of phosphorous or a mole of hydrogen?
The have the same amount
How many moles of iron are in 500 g of iron?
8.95 moles of iron
2 moles of an element have a mass of about 32 g. What element is it?
Oxygen
What is the relative mass of a zinc atom, compared to a sulfur atom?
Zinc is about 2X as heavy