PLEASE HELP CHEMISTRY QUESTION When two solutions are mixed in a beaker, a reaction occurs, and the temperature drop is the reaction of……..
A) exothermic and -ve enthalpy

B) endothermic and -ve enthalpy

C) exothermic and +ve enthalpy

D) endothermic and +ve enthalpy

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.

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?