The reaction in a fuel cell is used to power cars and other devices. Is it an endothermic or exothermic reaction? Explain.

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

Main expenses you plan on making payments on a new car too. you want to spend 15% of your monthly net pay on the car payment, insurance, registration, and taxes combined. what is your monthly car allowance? $149.46 $298.91 $448.37 $597.83

In an exothermic reaction at equilibrium, what is the effect of lowering the temperature? a. the reaction makes more products. b. the reaction makes more reactants. c. the reaction is unchanged.