Exam 1
The number of significant figures in 0.00034870
What is 5?
The coefficients of the following reaction once it is balanced: C4H10 + O2 ---> CO2 + H2O
What are 2,13,8,10?
The ideal gas equation.
What is PV=nRT?
What is the formula for work?
What is W=-PΔV
A measurement of energy in a thermodynamic system.
What is Enthalpy (H)?
The solution for (45.67+345.6+8978.134)/3 (With correct significant figures).
What is 3x103?
Electrons are transferred in this type of reaction.
What is oxidation-reduction reactions (redox reactions)?
760 torr, 760 mmHg, 101.325 kPa, 14.695 psi.
What are conversion factors to 1 atm?
101.325 J.
What is the conversion factor for 1 L*atm.
A change in function where the magnitude of the change is dependent on initial and final values, NOT on how the change was produced.
What is a state function?
The formula for carbonic acid.
What is H2CO3?
Silver chloride, sodium carbonate, magnesium phosphate, hydrosulfuric acid.
What are insoluble compounds?
There are 0.58 moles of sulfur hexafluoride gas trapped in a non-deformable container. Calculate the volume of the gas occupied in the container under STP conditions.
What is 13 L?
The amount of heat made when 250g of water is raised from 50oC to 97oC.
What is 49162 J?
Calculate the following ΔH°rxn of N2 (g) + O2 (g) → 2 NO (g)
Given: 2/3NO (g) → 1/3 N2 (g) + 1/3O2 (g) H°rxn=-5214 kJ/mol
What is 15642 kJ/mol?
The number of moles in 2.467g of diphosphorous pentoxide.
What is 0.01739 (0.01737) moles of P2O5?
Aluminum chloride and barium hydroxide react to form aluminum hydroxide and barium chloride. Given 5.22g of aluminum chloride and 12.50g of barium hydroxide, calculate the mass in grams of aluminum hydroxide produced.
What is 3.05 g Al(OH)3?
Calculate the partial pressure of oxygen and nitrogen in a mixture of 35.0 g of oxygen gas and 31.5 g of nitrogen gas in a 2.0 L container at 45oC.
What is POxygen=14 atm, PNitrogen=15 atm?
When 17g of Butane combusts, the temperature rises from 25oC to 75oC. How much heat is generated when water forms from it?
What is 5507.2 J?
Find the ΔHof for C3H8(g), given that
C3H8(g) + 5O2(g) --> 3CO2(g) + 4H2O(l) ΔHof = -2219.9 kJ/mol
C(graphite) + O2(g) --> CO2(g) ΔHof = -393.5 kJ/mol
H2(g) + 1/2O2(g) --> H2O(l) ΔHof = -285.8 kJ/mol
What is -103.8 kJ/mol?
This percentage of your workshop grade accounts for your participation in EVERY workshop.
What is 30%?
110 minutes.
What is the time we have for each workshop?
Consider a balloon that will expand without any restriction until it pops. If the balloon can hold a maximum of 4.0L of gas before it pops, and you're filling the balloon at a mass flow rate of 2.5 g/s of hydrogen gas, determine how long you can fill the balloon before it pops if the gas and the surrounding atmosphere is at 28oC. Take the outside pressure to be 0.95 atm.
What is 0.31g H2?
Determine the specific heat of a 250.0g piece of metal if the temperature of the metal drops from 89.3oC to 34.6oC when placed in a calorimeter with 250.0mL of water at an inital temperature of 25.4oC (specific heat of water is 4.184 J/g*K).
What is 0.703 J/g*oC?
Calculate ΔH for the reaction
4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)
From the following data:
N2(g) + O2(g) → 2NO(g) ΔH = -180.5 kJ/mol
N2(g) + 3H2(g) → 2NH3(g) ΔH = -91.8 kJ/mol
H2(g) + ½ O2(g) → H2O(g) ΔH = -241.8 kJ/mol
What is ΔHrxn= -1,628 kJ/mol?