Exam 3 Jeopardy

Gases Law Names

100

What is Boyle's Law?

P₁V₁=P₂V₂

200

What is Gay-Lussac's Law?

P₁/T₁=P₂/T₂

300

What is Charles' Law?

V₁/T₁=V₂/T₂

400

True/False: Avagadro's Law has a indirectly proportional between volume and the number of moles. 

False: the volume of a gas sample is directly proportional to the number of moles in the sample at constant pressure and temperature.

500

The Ideal equation combines which 3 laws?

Boyles, Charles, and Avogadro's/

Thermochem Naming

100

What is this Law?: 

–Energy may be converted from one form to another.

–The total amount of energy in the universe is constant. 

–Example 

•A chemical reaction (potential) gives off heat (thermal)

Law of Conservation Energy

200

True or False: The transfer of heat from the system to the surroundings is called Exothermic

True

300

What is the specific heat formula?

q=ms(Delta)T

400

True of False: The enthalpy reaction is (delta)H=H_products+H_reactants

False: (delta)H=H_products-H_reactants

500

What law is this: The change in enthalpy that occurs when reactants are converted to products is the same whether the reaction occurs in one step or a series of steps. 

Hess's Law

Solving Gas Problems

100

According to Boyle’s law, if you triple the volume of a gas while holding the temperature constant, the pressure ___________ to a final volume that is _______ the original volume.

decreases, one-third of

200

Determine the number of moles of aqueous sodium hydroxide required to react with 16.7 L carbon dioxide gas at 298 K and 1.00 atm to form sodium carbonate. 2 NaOH(aq) + CO2(g) → Na2CO3(aq) + H2O(l)

1.37 mol

300

A 3.75 L sample of nitrogen gas at 298 K is heated at constant pressure to a final volume of 8.33 L. What is the final temperature in Celsius?

389 Celsius

400

A gas sample containing 75.2 g of methane (CH4) occupies a volume of 10.3 L. Assuming no change in temperature or pressure, how many grams of methane must be added to increase the volume to 15.0 L?

34.3 g

500

Determine the molar mass of an unknown gas if a sample weighing 0.346 g is collected in a flask with a volume of 0.787 L at 67ºC. The pressure of the gas is 438 mmHg. 

21.625 mm

Thermochem Solving

100

Suppose that 10.00 mL HCl of unknown concentration is neutralized by 20.00 mL of a 1.50 M NaOH solution. Determine the concentration of the HCl solution.

3.00 M HCl

200

A Twinkie snack cake contains 220 Calories of energy. Convert this value to joules. Give answer is scientific notation.

9.20x10⁵ J

300

Given the thermochemical equations

• H2(g) + O2(g) = H2O2(l) Delta H = –187.8 kJ
• H2O2(l) = H2O(l) + ½ O2(g) Delta H = –98.0 kJ
• 
  
• Determine Delta H for the formation of water from its elements: 2 H2(g) + O2(g) = H2O(l)

–571.6 kJ

400

Determine Delta U, in Joules, in a chemical system that release 100.5 kJ of heat from the surroundings and performs 50 kJ work on the surroundings.

-50kJ

500

A 55.2 g piece of metal has a temperature of 90.4 °C before being placed into 102.5 g of water at 20.3 °C. The final temperature of the system is 24.7 °C. Determine the specific heat of the metal.

0.52 J/g×°C

!!EXTRA!!

100

What concert is Allison go to?

Lizzo concert

200

When are my office hours?

Exact Date, Time, Room and Building

Thursdays, 12:30pm-1:30pm, 112rm, and Learning Center

300

What is Allison's Last Name?

(spelled correctly)

Cabrera

400

How many animals does Allison have?

7

500

What is Allison's Major?

Biology with a Focus Biological Science