Asample of metal with a mass of 350.0 g is heated to 100.0 ºc and dropped into 400.0 g of water at 21.4 ºc. the temperature of the water rises to 28.0 ºc. assume there is no heat lost to the environment. use the correct number of significant figures in your answer. what is the amount of heat gained by the water?

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

How many moles of cu are needed to react with 5.8 moles of agno3? cu + 2 agno3 → cu(no3)2 + 2 ag

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.