Which set of formulas represent one ionic compound and one molecular (covalent) compound? A. MgF2 and P2S3
B. KOH and CaSO4
C. H2 and CO2
D. Br2 and H2SO4

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?

What atom has the largest atomic radius