If the scientist measured the mass of the copper cube after it had been in the furnace for one hour what would the cube’s mass probably be? Explain your answer

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.