A sample of hydrated magnesium sulfate has a mass of 4.052 g. After it is heated, it has a mass of 1.979 g. What is the percentage by mass of water in the hydrate?

What is the units of k in the following expression: rate = k[A][B]? A) s^-1 B) M^-1 s^-1 C) M^-2 s^-1 D) M

What happens at the atomic level when a metal is subjected to pressure, such as a blow from a hammer

What is the mass of KNO3 (s) that must dissolve in 100. grams of water to form a saturated solution at 50. oC?

Sprinter set in starting blocks at the beginning of a race rely on what kind of energy conversion

Which is the most electronegative element

Which explanation best describes a wave? A. a disturbance that travels through a medium with a transfer of energy and matter B. a disturbance that travels through a medium without a transfer of energy and matter C.

The requirements for one type of atom to substitute for another in a solid solution are:

How could you separate items that are different densities? explain

Why do elements within a period of the periodic table have different properties

A professional technician maintains and operates specialized scientific equipment. True False