If the activation energy is reduced, hydrogen can be produced with a renewable source. The renewable energy source is thermal energy

Soluble salts can be made using a base and an acid. (a) Complete this method of preparing dry crystals of the soluble salt cobalt(II) chloride-6-water from the insoluble base cobalt(II) carbonate. step 1 Add an excess of cobalt(II) carbonate to hot dilute hydrochloric acid.

The half life of palladium -100 is 4 days. How much of a 150g sample is left after 24 days?

Riley plays a computer game where he designs roller coasters for a virtual amusement park. Each diagram below illustrates a path for the roller coaster car to travel. Which track should Andrew choose if he wants the roller coaster car to have the MOST potential energy?

Emma said she calculated the mass equal to a given number of atoms for an unknown element. What conversion factor(s) did she use in her calculation? Write any conversion factors she used as unit ratios below. There is not enough information to include numbers with all units in the ratio(s), but include a number where it is appropriate.