Units
What is the unit used to measure very small quantities in chemistry?
Moles
What is the quantity of matter of an atom, found on the periodic table?
What is atomic mass?
How many moles of carbon atoms are there in 5g of carbon?
0.42 mol
How many atoms of iodine are in a mole of iodine?
6.022 x 1023
In what field of science do we most often use the mole?
Chemistry
What is Avogadro's number?
6.022 x 1023
What is the mass of Potassium (K)?
39.1 g/mol
How many grams are in 7 moles of H2O?
126 g
How many moles are in 4.3 x 1024 molecules of H2O?
7.14 mol
What's another name for the mole?
Avogadro's Number
What are the units for molar mass?
grams/moles
What is the mass of Water?
18 g/mol
What is the mass of one mole of Al2(SO4)3?
342.14 g
How many molecules are there in 5.9 moles of NaCl?
3.5x1024molecules
How big would a mole of basketballs be?
The size of the Earth
What is the unit for covalent compounds?
Molecules
What is the mass of Strontium Nitride (Sr3N2)?
290.86 g/mol
How many moles of (NH4)2O are present in 74.9 g?
1.44 moles
How many moles are in 4.5x1024 particles?
0.747 mol
If you have a balloon filled with one mole of gas at zero degrees Celsius at a pressure of one atmosphere, how many gas particles do you have?
6.022 x 1023 gas particles
What is the unit for ionic compounds?
Formula Units
What is the mass of C2H5ON?
59 g/mol
What is the mass of 54.3x1045 molecules of BeO?
2.25 x1024 g
How many particles would be in 8.4 moles of Octane (C8H18)?
5.04 x 1024
What is the most abundant element in the universe?
Hydrogen