A runner burns 2.58×103kJ during a five-mile run. How many nutritional Calories did the runner burn?

Perform this addition to the correct number of significant figures: 5.79+16.779+0.08

Which of the following items is NOT a common unit of energy?

What is the base SI unit for mass?

What are the important characteristics of the scientific method?

A 35-g sample of potassium completely reacts with chlorine to form 67 g of potassium chloride. How many grams of chlorine must have reacted?

A runner runs 4867 ft in 7.45 minutes. What is the runner’s average speed in miles per hour?

Which statement is an example of an observation?

A popular science demonstration is to take several liquids that will not mix together and “stack” these liquids in a tall glass cylinder. Suppose the following three liquids were placed in the same tall, narrow glass cylinder:   SUBSTANCE DENSITY g/mL vinegar 1.01 motor oil 0.87 corn syrup 1.36   These liquids would stack in which order?

In the number 48.93, which digit is estimated?