What happens to the copper sulphate crystals when they are heated that causes them to change color?

The atomic weight of Ga is 69.72 amu. There are only two naturally occurring isotopes of gallium: 69 Ga with a weight of 69.0 amu, and 71Ga with a weight of 71.0 amu. What is approximate natural abundance of the 71Ga isotope?

The isotope lithium-7 has a mass of 7.0160 atomic mass units, and the isotope lithium-6 has a mass of 6.0151 atomic mass units. given the information that 92.58 percent of all lithium atoms found in nature are lithium-7 and 7.

What structural units make up metallic solids

Which items contain plasma? a. gelatin b. lightning c. a fluorescent light bulb d. lava

Does CO2 contain molecules?

How many carbon atoms are represented by the model below?

How does a chemical equation express relationship between substance?

Toxaphene is a pesticide that was applied to cotton crops. If 1.5 kg of toxaphene is applied to 1000 m3 of soil and the soil density is 1700 kg/m3, Determine the toxaphene concentration in the soil in units of ppm.

What factor determines wether an acid is strong or weak?

A student prepared an unknown sample by making a dilute solution of the unknown sample. The dilute sample was prepared by adding 5.0 mL of the unknown sample to a 25.0 mL flask.