When a chemist titrates a standard solution of 168.61 ml of hydrochloric acid (hcl) with 0.104 m sodium hydroxide (naoh) , she finds that it requires 259.4 ml of the base to reach the endpoint of the titration. what is the molarity of the acid solution ?

How air particles exert a pressure on the inside of the balloon

Calcium chloride +gold(1) oxide—>

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.