Complete this sentence. If mass remains the same while the volume of a substance the density of the substance will
O decreases, increase
O increases, increase
O increases, stay the same
decreases, stay the same

The reaction q+r2=r2q is found to be first order in r2 and

The p sub shell can hold up to 8 electrons in an atom. true or false?

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles