Imagine that you are Archimedes. Write a procedure for finding the density of the crown.

Why are enzymes important to cells? they bring about chemical reactions. they provide structural support. they form the two layers of membranes. they store large quantities of energy.

Hydrogen has three isotopes 1h, 2h, and 3h. what is the difference between these three isotopes?

Which property or properties of gases accounts for the observation that cases1. gas particles have no volume. ii. gas particles exhibit elastic collisions. iii. gas particles are in constant random motion, iv. gas particles do not exert attractive or repulsive forces on one anothera. b.eland ivi onlyi and iic. i, ii, and iiid. iii and iv