Abolt of lightning exists in what phase?

a. gas
b. plasma

c. liquid
d. solid

Idon't understand what to put on the left lines i'm confused can anyone ?

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?

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