Module 5
What is the formula for Molarity?
What is M=n/L?
Reduction is ____ of electrons.
What is gain?
How many atm. is 2055 torr?
What is 2.703 atm.?
How do you convert from L*atm to J?
What is 101.325?
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Soluble or Insoluble:
AgCl
What is insoluble?
Find oxidation numbers of H2SO4.
H= +1
O= -2
S= +6
A sample of helium gas occupies a volume of 225 mL at a pressure of 760 torr. Find volume of the gas when pressure is 880 torr and temperature is constant.
A system absorbs 600 J of heat and work equivalent to 300 J on its surroundings. The change in internal energy is:
What is 300 J?
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Soluble or Insoluble:
Ca(OH)2
What is soluble?
Find oxidation numbers of NH4Cl.
N= -3
H= +1
Cl= -1
Name and write all gas laws.
What is: Ideal Gas Law, Boyles Law, Charles Law, Gay-Lussac's Law, Combined Gas Law?
How many grams of water can be heated from 40 C to 75 C using 10,025 Joules?
What is 68.42 g?
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Write balanced equation and net ionic equation:
H3PO4(aq)+CaCl2(aq) -->
Balanced Equation:
2H3PO4(aq)+3CaCl2(aq)→Ca3(PO4)2(s)+6HCl(aq)
Net Ionic Equation:
2PO3−4(aq)+3Ca2+(aq)→Ca3(PO4)2(s)
Determine oxidized and reduced species:
MnO−4+I−⟶I2+Mn2+
Oxidized: Mn
Reduced: I
A sample of oxygen gas has a volume of 37.6 L at 1.5 atm and 65.˚C. What volume will the sample have at STP?
What is 45.58 L?
A gas in a piston with an initial volume of 5.80 L is heated from 25 C to 300 C. The piston expands against a constant pressure of 1.3 atm. Find work (J) done by the system.
What is -703.3 J?
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Write total and net ionic equations:
K2C2O4(aq)+Ba(OH)2(aq)→2KOH(aq)+BaC2O2(s)
Total:
2K+(aq)+C2O2−4(aq)+Ba2+(aq)+2OH−(aq)→2K+(aq)+2OH−(aq)+BaC2O4(s)
Net:
Ba2+(aq)+C2O2−4(aq)→BaC2O4(s)
Identify the oxidizing and reducing agent:
2P(s) + 5 Cl2(g) → 2PCl5(g)
Oxidizing agent: Cl2
Reducing agent: P
If 7.0 moles of H2 and 2.0 moles of O2 are placed in a 40 L tank at a temperature of 375 C, what will the pressure of the resulting mixture of gases be?
What is 11.9 atm?
A 50.0 g aluminum block at 25.0 °C is placed in 100.0 g of water at 80.0 °C. What is the final temperature of the water and aluminum when they reach thermal equilibrium? Assume no heat is lost to the surroundings. (Specific heat of aluminum = 0.90 J/g·°C, specific heat of water = 4.184 J/g·°C)
What is 72.6 C?
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