How many hydrogen are represented in the following compound: 3Co(OH)2

An alcohol thermometer makes use of alcohol's changing in order to measure temperature. as the temperature goes up, the alcohol contained in the thermometer increases in volume, filling more of the thermometer's tube.

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water