When calcium burns in oxygen, it forms calcium oxide. The balanced equation is 2Ca + 02 -- 2CaO What mass of calcium must be burned in order to produce 56 grams of calcium oxide?

Look at the front-wheel-drive vehicle shown in figure a-3. the engine in this vehicle is mounted so that the front of the engine faces the side of the vehicle, so the engine would be called a(an) a. in-line engine. b. v-type engine. c. horizontally opposed engine. d. transverse-mounted engine.

Jacob’s four-month-old infant is crying continuously. while jacob’s wife suggests that he pick up the baby, jacob’s mother thinks that picking up the baby each time she cries is bad for the baby. why is jacob’s wife right? a. babies sleep better when carried. b. babies learn to cry whenever they want someone to hold them. c. babies may choke if crying while lying on their back. d. babies develop a sense of trust that someone is there to provide care.

Which of the following entities ensure that national security policies are carried out? check all that apply.