Mole kingdom
How many grams of Al in 2.00 moles of Al?
54.0 g Al
Classify the following reactions:
CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)
combustion
A container contains a mixture of 3 different gases. If their partial pressures are 0.50atm oxygen gas, 0.45 nitrogen gas, and 140.8 kPa He gas, what is the total pressure of the container?
2.2 atm
When we make Kool-Aid (in the Kool-Aid lab), Kool-Aid powder is the ________ and water is the ________.
Solute; solven
What is the molar mass of Ca(OH)2?
74.1 g/mol
A balloon contains 5.50x1022 atoms of Helium gas (He). What is the mass in grams He of the balloon?
Don't forget units and sig figs
0.365 grams He
Classify the reaction:
The equation FeCl2(aq) + K2SO4 (aq) →2KCl (aq) + FeSO4(s) is a(n) ______________ reaction
double replacement
What volume is occupied by 19.58g of methane, CH4, at 27°C and 1.59 atm?
18.9 L
What is the molarity of a solution that has 3.4 moles in 1.5 Liters?
2.3 M
To increase the rate of dissolving for sugar, you could______
provide 2 factors that increase solubility
1. Crusing the sugar
2. increase temperature
3. stir it
An excess of Al and 9.0 mol of HgCl2 are reacted according to the equation below How many moles of AlCl3 will be formed?:
2Al+ 3HgCl2 → 2AlCl3 + 3Hg
6.0 mol
A balloon is filled with helium gas with an initial volume of 250mL. If the pressure remains constant and the balloon was placed inside a container with boiling water. What would happen to the volume of the balloon?
The volume of the balloon will increase
How many moles of sucrose (C12H22O11) would be in 7.2 L of a 2.5 M solution?
18moles
What is the volume of 9.00 moles of helium gas at STP?
202 L He
Using the decomposition of water, forming hydrogen gas and oxygen gas, what mass of hydrogen is produced when 144 grams of water is decomposed?
16.0 g H2
balance
__C5H9O + __O2 --> __CO2 + __H2O
_4_C5H9O + _27_O2 --> _20_CO2 + _18_H2O
A 2L gas tank at 22.0°C exerts a pressure of 8.50 atm. After heating the tank, the pressure of the gas increases to 11.50 atm. What is the temperature of the heated gas if the volume stays constant?
399 K
What volume (in mL) of a 0.550 M solution of KOH can be made with 20.9 g of KOH?
677 mL
What is the mass of 5.67 moles of carbonic acid?
352g H2CO3
For the reaction: Mg(OH)2 + 2 HCl --> MgCl2 + 2 H2O, A 50.6 g sample of Mg(OH)2 is reacted with 45.0 g of HCl. How much H2O is produced?
22.2 g H2O
predict the products and balance the chemical reactions of the reaction between sodium hydroxide and sulfuric acid.
_2_NaOH + _1_H2SO4 --> _2_HOH + _1_Na2SO4
A diver finds the best corals at a depth of approximately 10.0 m. The diver’s lung capacity is 2.4L. The air temperature is 32.0°C and the pressure is 101.30 kPa. What is the volume of the diver’s lungs at a temperature of 21.0°C, and a pressure of 1.39atm?
1.7 L
What is the mass of H2CO3 in 0.350L of 0.600M H2CO3 solution?
13.0g
For the reaction: Mg(OH)2 + 2 HCl --> MgCl2 + 2 H2O, A 50.6 g sample of Mg(OH)2 is reacted with 45.0 g of HCl. HCl is the limiting reactant.
How much is leftover from excess reactant?
14.g Mg(OH)2