Which of the following happened first?

If an athlete weighs 133 lb and has 15.0 % body fat by weight, how many pounds of fat does the athlete's body contain?

What happens to a glass of water at a temperature of 20°C when it is placed into a freezer set at - 10°C? A; It cools to - 10°C, where it stays until freezing is complete. B; It freezes, then the temperature drops to 0°C and then to - 10°C.

Which acid has the greatest acid dissociation constant? carbonic acid boric acid nitric acid

The element nitrogen has two stable isotopes, nitrogen-14 with a mass of 14.00 amu and nitrogen-15 with a mass of 15.00 amu. From the atomic weight of N = 14.

1. ancient plants and animals animals 2. consumers transpiration 3. water loss plants 4. relationship of organisms to their environment habitat 5. nitrogen-fixing bacteria rhizobium 6. energy converting pigment groundwater 7. producer chlorophyll 8.

Calcium nitrate + aluminum hydroxide balanced equation

The bohr theory of the hydrogen atom predicts the energy difference (in j) between the n = 3 and the n = 5 state to be

Which is true about all the different types of matter? 1. It is all made of the same basic particles. 2. It is all made of the same types of molecules. 3. Different types are made of different types of particles. 4.

How many moles were required to prepare 500mL of a 0.45M calcium chloride solution?

an element has atomic numer 10 and an atomic mass of 20. how many neutrons are in the atom of this element