Chemistry Homework Help

### Browse Homework Solutions

156 solutions

Dimensional Analysis

#### Q. A pint of premium ice cream can contain 1456 Calories. What mass of fat, in grams and pounds, must be produced in the body to store an extra 1456 Calories if the average number of Calories for fat is 9.1 Calories/g?

Solved • Jul 18, 2019

Dimensional Analysis

#### Q. If the concentration of mercury in the water of a polluted lake is 0.350 μg (micrograms) per liter of water, what is the total mass of mercury in the lake, in kilograms, if the lake has a surface area of 15.0 square miles and an average depth of 39.0 feet?

Solved • Jul 9, 2019

Dimensional Analysis

#### Q. If an athlete expands 1310. kj/h, how long does she have to play to work off 1.00 lb of body fat? Note that the nutritional calorie (Calorie) is equivalent to 1 kcal, and one pound of body fat is equivalent to about 4.10 x 10^3 Calories.

Solved • Jun 28, 2019

Dimensional Analysis

#### Q. The density of helium is .164 kg *m^-3. What is this density in lb * ft^-3? 1 kg=2.20 lb and 1 m= 3.28 ft.

Solved • Jun 27, 2019

Dimensional Analysis

#### Q. Convert 14.8 g/cm3 to kg/in3?

Solved • Jun 19, 2019

Dimensional Analysis

#### Q. The density of the sun is 1.41 g/cm3 and its volume is 1.41 x 1027 m3. How many hydrogen molecules are in the sun if we assume all the mass is hydrogen gas? I'm having so issues with finding ways to answering questions like the one above. I know what the question is looking for but i do not know the route on how to get there? Any advice

Solved • Jun 14, 2019

Dimensional Analysis

#### Q. convert 10.0 yards into millimeters

Solved • Jun 11, 2019