How many atoms are in the following:

2CH4
10Mg(OH)2
5Al2(SO4)3
3 H2O

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.

Why are pipes bursting in the in extremely cold weather?

What does the mass of 0.7891 mol of ferric oxide (fe2o3)