Question 3(Multiple Choice Worth 3 points) (02.05 MC)
What type of energy transfer takes place when we hold a hot mug?
O Radiation, because heat travels in all directions
O Convection, because heat travels in all directions
O Conduction, because heat travels from hot to cold
O Radiation, because heat travels from cold to hot

Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg