What do the symbols in parenthesis indicate?
cacl2(aq) + 2agno3(aq)) d ca(noà)2(aq) + 2agcl(s)
1.the catalyst used in the reaction
2. the number of atoms of each reactant and product
3. the physical state of each reactant and product
4. the number of units of each reactant and product

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

What is the mass of 4 molecules of co2

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.