Think about the lab procedure you just read. label each factor below with v for variable or c for constant. temperature of the gas: volume of the gas in the syringe: weight put on the syringe: number of moles of gas in the syringe: mass of gas in the syringe: number of gas molecules in the syringe:

Which is true of the reactants in this displacement reaction? fe + 2hcl fecl2 + h2 a. the reactants are located to the left of the arrow in the chemical equation. b. the reactants contain 1 iron atom, 2 hydrogen atoms, and 1 chlorine atom. c. the reactants are the atoms, molecules, or compounds formed in the reaction. d. the reactants have the same physical and chemical properties as the products.

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?