If 17.8 grams of koh dissolve in enough water to make a 198-gram solution, what is the concentration in percent by mass? . a. 8.25% koh. b. 8.99% koh. c. 10.9% koh. d. 11.1% koh

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

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.

What is the mass of 0.46 mil of mgcl2