The distance from the earth to the sun is how many light years
a) exactly one light year
b) any number of light years
c) less than one light year
d) more than one light year

How can nonpolar molecule contain polar covalent bonds

Determine the total number of atoms in 1.0 mol of co2

Many radioactive atoms that have large masses undergo radioactive decay by releasing a particle that is identical to a helium-4 nucleus. what changes in the original atom are expected as a result of this natural phenomenon? the atomic number and the mass number will decrease. the atomic number and the mass number will increase. the atomic number will increase, and the mass number will decrease. the atomic number will decrease, and the mass number will increase.