How many moles of CS2 form when 2.7 mol C reacts?
5C + 2 SO2 ---> CS2 + 4CO
0.54 mol
100
How do you convert Celsius to Kelvin?
Add 273
100
Under what conditions are gases most soluble?
low temperature and high pressure
100
What is the conjugate base in the following equation: HCO3- + NH3 ---> CO3-2 + NH4
CO3-2
200
What is formula of the ionic compound formed from aluminum and sulfur?
Al2S3
200
What is the molecular formula for the compound if the empirical formula is CH2O and the molar mass is 90g/mol?
C3H6O3
200
A gas with a volume of 15L at 327oC is cooled at constant pressure until the volume reaches 5L. What is the new temperature of the gas in degrees Celsius?
-73 degrees Celsius
200
What is the molarity of a solution that contains 0.5g NaCl dissolved in 100 mL of solution?
0.086 M
200
What is the pH if the [H+] = 7.9 x 10-6?
5.1
300
What is formula for iron(III)chloride?
FeCl3
300
What are the products from the double replacement reaction?
CaCl2 + H2SO4
CaSO4 and 2HCl
300
What is the volume occupied by 1.24 mol of a gas at 35oC if the pressure is 96.2 kPa? (R = 8.31 L kPa/mol K)
33L
300
What volume 0.500M KCl solution would you need to dilute to make 100.0mL of 0.100M KCl?
20 mL
300
What is the [H+] if the pH of the solution is 10.5?
3.2 x 10-11
400
What is chemical formula for phosphoric acid?
H3PO4
400
What is the percentage of iron in FeO?
78%
400
A gas sample contains nitrogen, oxygen, and bromine. If the partial pressure of nitrogen is 4 atm, oxygen is 8.2 atm, and the total pressure is 21.5 atm, what is the pressure of bromine?
9.3 atm
400
What is the % m/m (mass/mass) concentration of a sample that has 22.5 g NaCl and 2500g of solution?
0.9%
400
What are the products formed from sulfuric acid and calcium hydroxide? Write the formulas.
CaSO4 and 2H2O
500
What is the formula for calcium carbonate?
CaCO3
500
How many grams of SO3 are produced when 20.0g FeS2 reacts with 16.0g O2?
4FeS2 + 15O2 --> 2FeS2O3 + 8SO3
21.3 g
500
A sample of nitrogen gas has a pressure of 6.58kPa at 539K. If the volume does not change, what will the pressure be at 211K?
2.58kPa
500
What is the boiling point of the solution that contains 1.5 mol NaCl in 1000g H2O? (KB=0.512oC/m)
101.54 degrees Celsius
500
How many milliliters of 0.45HCl will neutralize 25.0 mL of 1.00M KOH?
HCl + KOH --> H2O + KCl