Please Help!!! Balance the following chemical equation by typing the coefficients in the drop-down boxes for the reactants and products. (Reactants are on the top line; products are on bottom line.)
[ Select ] NaBr + [ Select ] CaF2 --> [ Select ] NaF + [ Select ] CaBr2

Nickel crystallizes in the face-centered cubic (fcc) lattice. the density of the metal is 8902 kg/m3. calculate the radius of a nickel atom.

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.