Using the average atomic mass, calculate the mass of 2.949 × 10−5 mol Hg.
Answer in units of g.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

Match the formula for the following compound:   magnesium sulfate heptahydratemgs·7h2omg2so4·7h2omg(so4)2·7h2omgso4·7h2o