Atoms, Ions, Molecules
How many molecules of LiBr are there in 6LiBr?
6 molecules
Find the GFM for ...
O2
31.9988 g/mol
Name the reaction type for the following reaction:
Cr + 3O2 --> 2Cr2O3
Synthesis
Write the mole ratios for the following reaction:
4 Cr + 3 O2 --> 2 Cr2O3
Ratio of Cr to Cr2O3
4:2 or 2:1
What is the percent composition of carbon in CO2?
27.3%
How many atoms of oxygen are there in CO2?
2 atoms Oxygen
Find the GFM for ...
NaCl
58.44277 g/mol
Name the reaction type for the following reaction:
H2CO3 --> H2O + CO2
Decomposition
Write the mole ratios for the following reaction:
4 Cr + 3 O2 --> 2 Cr2O3
Ratio of O2 to Cr2O3
3:2
Convert the following grams to moles.
54.0 g HCl
1.48 mol HCl
How many atoms of sulfur are there in 4GeS2?
8 atoms Sulfur
Find the GFM for ...
H2O
18.01528 g/mol
Name the reaction type for the following reaction:
NaOH + HCl --> NaCl + H2O
Double Replacement
Write the mole ratios for the following reaction:
2NH3 --> N2 + 3H2
Ratio of N2 to H2
1:3
Balance the following equation:
__ S8 + __ O2 --> __ SO2
__ S8 + _8_ O2 --> _8_ SO2
How many carbonate ions are there in 2MgCO3?
2 carbonate ions
Find the GFM for ...
Li3PO4
101.91236 g/mol
Name the reaction type for the following reaction:
2K + 2H2O --> 2KOH + H2
Single Replacement
Write the mole ratios for the following reaction:
2NH3 --> N2 + 3H2
Ratio of NH3 to H2
2:3
Determine the empirical formula of a compound that is 92.24% Carbon and 7.76% Hydrogen by mass.
CH
How many phosphate ions are there in 3Mg3(PO4)2?
6 phosphate ions
Find the GFM for ...
3Mg3(PO4)2
788.57316 g/mol
Name the reaction type for the following reaction:
Ca(C2H3O2)2 + Na2CO3 --> CaCO3 + 2NaC2H3O2
Double Replacement
Write the mole ratios for the following reaction:
8Cu + S8 --> 8CuS
Ratio of CuS to S8
8:1
How many molecules are there in 32.0 g FeF3?
1.71 x 1023 molecules