Name four things that organisms need to survive.

A reaction will be spontaneous at all temperatures if the reaction? A. has a positive value for free energy change. B. is exothermic and accompanied by an increase in disorder. C. is endothermic and accompanied by a decrease in disorder. D.

What test or tests do you use to find NaCl

How many molecules are in 3.2 mol of ammonia, NH3

At what temperature is more KCl able to dissolve: 40°C or 90°C? (You don't have to give out a paragraph, but also explain why, so that I may understand)

Is light given off in small particles called photons

Audrey is driving 50 miles in 2 hours what is her average speed?

Water has a specific heat of 4184 J / (kgK) how much energy is needed to increase the temperature os a kilogram of water 5C?

A student noticed while doing the neutralization experiment that the calorimeter kept getting warmer. how would this error affect the final calculation for the δhneut of each reaction? would it be overestimated, underestimated or remain unaffected?

A solution contains 45 grams of nitrogen gas and 40 grams of argon. What is the mole fraction of argon in this solution?

How is an animal cell related to tissue and organs