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Stoichiometry
Gases
Acids and Bases
Redox and Nuclear
Solutions and Thermo
100
What is the molar ratio of HgO to O2 in the following reaction: 2 HgO → 2 Hg + O2
2 to 1
100
What is STP (provide the actual values)?
1 atm and 0 deg C
100
These donate H+
Acids
100
Which is the most penetrative type of nuclear decay
Gamma decay
100
What is the formula used to calculate the amount of heat absorbed or released?
q=mcT
200
How many moles in 28 grams of CO2?
.64 moles
200
As temperature increases, what happens what happens to the pressure?
Pressure increases
200
What is the name of the following acid? HNO2
nitrous acid
200
The process that involves a gain in electrons is called:
Reduction
200
This type of reaction has a negative H
exothermic
300
How many moles of lithium hydroxide are required to react with 22 mol of CO2 to produce lithium carbonate and water? 2 LiOH + CO2 → Li2CO3 + H2O (Molar mass LiOH = 24g/mol and CO2 = 44g)
44 moles
300
If the pressure of carbon dioxide is 1 atm and the temperature is 273 K, what would be the volume of one mole of the gas ?
22.4 L
300
What are the products of a neutralization reaction?
salt and water
300
What is the oxidation number of S in the sulfate ion
+6
300
How many grams of barium hydroxide are required to prepare 100.0 mL of a 2.00 M solution?
34.2 g
400
How many moles of HCl are needed to produce 105 g of carbon dioxide gas? NaHCO3 + HCl → NaCl + CO2 + H2O (Molar mass CO2 = 44.0 g Molar mass HCl = 37 g)
2.39 moles
400
How many Liters does 10 moles of hydrogen gas, at 300 K and a pressure of 200 kPa, have?
124.71 L
400
What is the pOH of a strong acid that is .0034 M
11.53
400
In a nuclear reaction Al-27 and He-4 combine to form Si-30 and what other element (include mass)
H-1
400
The heat of fusion of water is 6.01 kJ/mol. What is this value in J/g?
333.89 J/g
500
Given the following reaction C3H8 + O2 -------> CO2 + H2O If you start with 14.8 g of C3H8 and 60 g of O2, determine the limiting reagent (answer must include the amount of water in grams produced)
C3H8 is limiting producing 24.22 g water. vs O2 which would produce 27 g of water.
500
A gas at 100 kPa and 20 C fills a flexible container with an initial volume of 2.00 L. If the temperature is raised to 80 C and the pressure is increased to 400 kPa, what will be the new volume?
.60 L
500
27.0 mL of 0.310 M NaOH is titrated with 0.740 M H2SO4. How many mL of H2SO4 are needed to reach the end point?
5.66 mL
500
If you start with 8 grams of phosphorus-32, how much will remain after 57.2 years? Its half- life is 14.3 years.
.5 g
500
How much energy is required to heat 125.0 g of water from -15.0 °C to 35.0 °C? Heat of fusion of water = 334.16 J/ g molar heat capacity of liquid water = 75.4 J/ mol °C molar heat capacity of ice = 36.4 J/ mol °C
63,866.67 J