Which of these groups of animals are extinct?

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sea turtles

polar bears

killer whales

dinosaurs

An industrial chemist is studying the rate of the haber synthesis: n2 + 3h2 → 2nh3. starting with a closed reactor containing 1.35 mol/l of n2 and 0.35 mol/l of h2, she finds that the h2 concentration has fallen to 0.12 mol/l after 50. seconds.

How are the sizes of stars measured? I just need a simple answer

Predicting Reaction Products Sn + CuCl2

KOH and LiOH are examples of bases neutral compounds acids salts

Lactobacilli bacteria are present in which food preservation

How does phosphorus enter the human body?

When a reaction occurs between atoms with ground state electron configuration 1s2 2s1 and 1s2 2s2 2p5 the predominant type of bond formed is

How does heat transfer takes place between any two systems?

Hydrate name of CaCl2 * 8 H2O

Calculate the heat evolved from a mixture of 14.1 l of sulfure dioxide