Mole Concept
1 mole of any chemical equals
6.022x1023 or Avogadro's Number or Molar Mass on the Periodic Table
How many moles are in 25 grams of Sodium (Na)?
1.09 moles Na
What numbers in a reaction will give the mole to mole ratio?
Coefficients
Which has more atoms - 5 moles of Mg or 5 moles of Ca? Or do they have the same number of atoms?
Same number of atoms
How many atoms are in 1 mole of Carbon (C)?
6.022x1023 atoms
How many grams are in 1.8 moles of Carbon?
21.6 grams of Carbon
2H2 + O2 --> 2H2O
If there are 6 moles of H2, how many moles of O2 are needed? Explain answer without dimensional analysis
The ratio between H2 and O2 is 2:1, So if there are 6 moles of H2, there would need to be 3 moles of O2
Which has a higher mass - 5 moles of Mg or 5 moles of Ca? Or do they have the same mass?
5 moles of Ca
How many grams are in 1 mole of Neon (Ne)?
20.18 grams
How many grams are in 2.3 moles of KBr?
273.7 grams KBr
2 H2 + O2 --> 2 H2O
If a reaction starts with 1.5 moles of O2, how many moles of H2 are needed? Show dimensional analysis
3 moles H2
Which has more atoms - 12.01 g of Carbon or 14.01 g of Nitrogen? Or do they have the same number of atoms?
Same number of atoms
How many grams are in 6.022x1023 atoms of Aluminum (Al)?
26.98 grams
How many moles are in 75 grams of Mg3P2?
0.56 moles of Mg3P2
Al2S3 + 6 HF --> 2 AlF3 + 3 H2S
If a reaction starts with 1.5 moles of HF, how many moles of AlF3 will be produced?
0.5 moles AlF3
Which has more moles - 10 grams of Na or 10 grams of P? Or do they have the same number of moles?
10 grams of Na
How many atoms are in 40.08 grams of Calcium (Ca)?
6.022x1023 atoms
How many moles are in 100 grams of Al(NO3)3?
0.47 moles Al(NO3)3
If the reaction has 1.8 moles of Al, how many moles of CuCl2 are needed? Show dimensional analysis
2.7 moles CuCl2
Which has more atoms - 14 grams of Lithium (Li) or 14 grams for Nitrogen? Or do they have the same number of atoms?
14 grams of Lithium