A submarine changes its mass by adding or removing seawater from tanks inside the sub. Explain how this can enable the sub to dive or rise to the surface.

How much energy, in calories, is required to change a 25.00g of ice at - 10.00C to water at 35.00C?

At constant pressure increasing the temperature of a fixed amount of gas will do what

Which set of changes does not involve breaking or forming chemilcal bonds

Which enzyme is likely to be active in the acidic environment of the stomach? A) pepsin B) trypsin C) amylase D) pepsin and trypsin

A scientist is working with methane (CH4) and butane (C4H10). Which statement best compares these chemicals? 1.) They are two different types of molecules that each contain the same number of atoms. 2.

Light waves come in different wavelengths and frequencies. The color of the light we see is dependent on wavelength. When we see a rainbow, we are actually seeing

Use the periodic table to determine the number of protons in an atom of arsenic (as)

Which of the following is a strong electrolyte. sugar, sodium chloride, honey vinager, carbon tetrachloride?

How do rockets work? What chemicals are used and what reactions happens with those chemicals to make a rocket fly?

The solubility of iron (ii) hydroxide, fe (oh) 2, is 1.43x10-3 gram per liter at 25oc. a. write a balanced equation for the solubility equilibrium