What should have only one idependent variable

A scientist is studying a sample of water and a sample of an unknown liquid. Both samples have the same mass.

Why do some atoms gain electrons while others lose them in chemical reactions?

Suppose the diver at the top of a 9 m high platform has a mass of 50.0 kg. Calculate her potential energy relative to the ground. Answer in Joules.

What is the oxidation state of an individual sulfur atom in so42-?

The goose has a mass of 19.2 lb (pounds) and is flying at 7.10 miles/h (miles per hour). What is the kinetic energy of the goose in joules? Enter your answer numerically in joules.

Describe and give an example of parasitism.

Why is a dilute solution of oleic acid used instead of pure oleic acid?

The vapor pressure of benzene (C6H6) is 73.0 mm Hg at 25 °C. What is the vapor pressure of a solution consisting of 179 g of benzene and 0.217 mol of a nonvolatile nonelectrolyte?

Aldo drove 420 miles using 18 gallons of gas. at this rate, how many gallons of gas would he need to drive 357 miles

How many grams of As2S3 are in 3.25 moles?