Which of the following solids is the best insulator? a. iron b. magnesium c. gold d. magnesium fluoride

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma