Balancing
What are the five types of chemical reactions?
Synthesis
Decomposition
Single replacement
Double replacement
Combustion
How many milliliters are in 6.50 liters?
6.50 x 1000 = 6500
How many moles are in 525 g of calcium?
525 grams x (1 mole / ~40 grams) = 13.1 moles
How many moles of carbon dioxide are produced when 10.0 moles of C3H8 is burned with oxygen gas? **NOT BALANCED**
__C3H8 + __O2 --> __CO2 + __H2O
C3H8 + 5O2 --> 3CO2 + 4H2O
10 mol C3H8 x (3 mol CO2 / 1 mol C3H8)
= 30 mol CO2
In a combustion reaction, what are the two products always produced?
Carbon dioxide and water
How many kilocalories are in 1600 calorie?
1600 / 1000 = 1.6
How many grams are in 0.0450 mol of Cr?
0.0450 mole x (52.00 grams / 1 mole) = 2.34 grams
Determine the mass of sodium chloride produced when 1.25 mol of chlorine gas reacts with sodium.
2Na + Cl2 --> 2NaCl
1.25 mol Cl x (2 mol NaCl / 1 mol Cl) x (~58 g NaCl / 1 mol NaCl) = ~145 g NaCl
Balance the equation:
NaOH + CaBr2 --> Ca(OH)2 + NaBr
2NaOH + CaBr2 --> Ca(OH)2 + 2NaBr
How many grams are in 7.5 kilograms?
7.5 x 1000 = 7500
How many particles are in 11.5 mol of Ag?
11.5 mole x (6.02 x 1023 particles) = 69.23 x 1023
= 6.923 x 1024 particles
Determine the moles needed of NaOH to react with 500.0 g of H2SO4.
H2SO4 + 2NaOH --> Na2SO4 + 2H2O
500 g x (1 mole / ~98 grams) x (2 moles NaOH / 1 mole H2SO4) = ~10.2 NaOH
Write AND balance the following equation:
Carbon disulfide reacts with oxygen gas and produces carbon dioxide and sulfur dioxide
CS2 + 3O2 --> CO2 + 2SO2
How many joules are in 55.2 caloires?
55.2 x 4.184 = 231
How many moles are in 4.50 x 1024 atoms of zinc?
4.50 x 1024 particles x (1 mole / 6.02 x 1023 particles) = 0.748 x 101
= 7.48 moles
Determine the mass of water from the decomposition of 25.0 g of Ammonium Nitrate
NH4NO3 --> N2O + 2H2O
25 grams x (1 mol / ~80 grams) x (2 mol H2O / 1 mole NH4NO3) x (~18 grams / 1 mole)
= ~11.25 g
Write AND balance the following equation:
Iron (III) chloride reacts with sodium hydroxide, producing solid iron (III) hydroxide and sodium chloride
FeCl3 + 3NaOH --> Fe(OH)3 + 3NaCl
How many kilocalories are in 85,200 joules?
85200 / 4.184 = 20,363 calories
20,363 / 1000 = 20.4
How many particles are in 31.1 g of Au?
31.1 grams x (1 mole / ~197 grams) x (6.02 x 1023 particles / 1 mole) = 0.950 x 1023
= 9.50 x 1022 particles