Nitric acid+ calcium oxide gives what

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

Why does a red shoe appear red in daylight

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.