Agraduated cylinder has 35.0 ml of water in it before an object is dropped inside. the new volume is 38.5 ml. what is the volume of the object in cm3?

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

Both 1,2−dihydronaphthalene and 1,4−dihydronaphthalene may be selectively hydrogenated to 1,2,3,4−tetrahydronaphthalene. one of these isomers has a heat of hydrogenation of 101 kj/mol (24.1 kcal/mol), and the heat of hydrogenation of the other is 113 kj/mol (27.1 kcal/mol). match the heat of hydrogenation with the appropriate dihydronaphthalene.

What is avogadro’s number, and why is it useful