carbon tetrachloride has been widely used in the cleaning industry in fire extinguishers and refrigerated. construct an explanation of how carbon and chlorine combine to form carbon tetrachloride

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.