Dimensional Analysis #3Makeup

Solve for how many Pascals (Pa) are in 4.95 torr of Mercury. (101325 Pa = 1 atm; 760 torr = 1 atm) Which answer shows the correct setup to solve the problem?

• $4.95\ torr\ x\ \frac{760\ torr}{1\ atm}\ x\ \frac{1\ atm}{101325\ Pa}$

• $4.95\ torr\ x\ \frac{1\ atm}{760\ torr\ }\ x\ \frac{1\ atm}{101325\ Pa}$

• $4.95\ torr\ x\ \frac{760\ torr}{1\ atm}\ x\ \frac{101325\ Pa}{1\ atm}$

• $4.95\ torr\ x\ \frac{1\ atm}{760\ torr}\ x\ \frac{101325\ Pa}{1\ atm\ }$

Calculate: How many Pascals are in 4.95 torr of Mercury? (101325 Pa = 1 atm; 760 torr = 1 atm) (atm means atmosphere)

• 3.71 x 10 ^-2 Pascal Hg

• 6.60 x 10 ² Pascal Hg

• 3.81 x 10 ⁸ Pascal Hg

• 6.43 x 10 ^-8 Pascal Hg

Solve for how many milliliters of HCl are in 35.45 grams HCl: What is the best setup?
 $A.\ 35.45\ g\ x\ \frac{1\ mol}{36.46\ g}x\ \frac{1\ mol}{22.4\ L}x\ \frac{1000\ ml}{1\ L}$  

 $B.\ 35.45\ g\ x\ \frac{36.46\ g}{1\ mol}x\ \frac{1\ mol}{22.4\ L}x\ \frac{1\ L}{1000\ ml}$  

 $C.\ 35.45\ g\ x\ \frac{1\ mol}{36.46\ g}x\ \frac{22.4\ L}{1\ mol}x\ \frac{1000\ ml}{1\ L}$  

 $D.\ 35.45\ g\ x\ \frac{1\ mol}{36.46\ g}x\ \frac{22.4\ L}{1\ mol}x\ \frac{1\ L}{1000\ ml}$   
 

•  Choice A

•  Choice B

• Choice C

• Choice D

Calculate: How many milliliters are in 35.45 grams of HCl ? ( 1 mole = 22.4 liters; 1 liters = 1000 ml; 1 mole = ?? grams HCl - you do the molar mass!)

• 2.18 x 10 ^-2 ml HCl

• 5.77 x 10 ^-2 ml HCl

• 43.41 ml HCl

• 2.18 x 10 ⁴ ml HCl

Calculate: A person eats 10.45 Kg of ice cream each year, how many pounds is this? (453.92 grams = 1 lb; 1 Kg = 1000 grams)

• 4.74 lbs

• 23.02 lbs

• 2.30 x 10^-5 lbs

• 4.74 x 10⁶ lbs

Mr. Metoyer burns 6.15 x 10⁶ calories when running. How many Kilojoules would it be? What is the correct set up?

• $6.15\ x\ 10^6cal\ x\ \frac{4.18\ J}{1\ cal}x\ \frac{1\ KJ}{1000\ J}$

• $6.15\ x\ 10^6\ cal\ x\ \frac{1\ cal}{4.18\ J}x\ \frac{1\ KJ}{1000\ J}$

• $6.16\ x\ 10^6\ cal\ x\ \frac{4.18\ J\ }{1\ cal\ }x\ \frac{1000\ J}{1\ KJ}$

• $6.15\ x\ 10^6\ cal\ x\ \frac{1\ cal}{4.18\ J}\ x\ \frac{1000\ J}{1\ KJ}$

Calculate: Mr. Metoyer burns 6.15 x 10 ⁶ calories when running. How many Kilojoules will it be? (1 calorie = 4.18 Joules; 1 Kilojoule (KJ) = 1000 Joules)

• 1.47 x 10 ³ KJ

• 1.47 x 10 ⁹ KJ

• 2.57 x 10 ¹⁰ KJ

• 2.57 x 10 ⁴ KJ

Solve for how much mass (g) of Carbon Dioxide gas is made from 3.58 liters of it? What is the correct set up?

•  $3.58\ L\ x\ \frac{22.40\ L}{1\ mol}x\ \frac{??\ gram}{1\ mol}$  

•  $3.58\ L\ x\ \frac{1\ mol}{22.4\ L}x\ \frac{??\ gram}{1\ mol}$  

•  $3.58\ L\ x\ \frac{22.4\ L}{\ 1\ mol}x\ \frac{1\ mol}{??\ gram}$  

•  $3.58\ L\ x\ \frac{1\ mol}{22.4\ L}x\ \frac{1\ mol}{??\ gram}$  

Calculate: How much mass (g) of Carbon Dioxide is made from 3.58 liters of it? (1 mole = 22.4 liters; 1 mole = ??? grams CO₂ - you do the molar mass for it)

• 7.03 grams CO₂

• 3529.25 grams CO₂

• 1.82 grams CO₂

• 0.0036 grams CO₂

Calculate: Gas costs $3.05 per gallon, and your car travels at 27 miles for each gallon of gas. Approximately, how many miles can you travel in your car if you start with $95.00 to spend on gas?

• 290 miles

• 841 miles

• 7823 miles

• 733 miles