Acertain ore is 35.0% nickel by mass. how many kilograms of this ore would you need to dig up to have 10.0 g of nickel?

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?