Hurry I'm on a timer Which two materials form igneous rocks upon cooling?
A. lava and crystals
B. magma and lava
C. crystals and intrusive rocks
D. intrusive rocks and sediment from rocks

How many molecules are found in 1.32 mol of nacl?

Stage in which a typical star has completely stopped fusion

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