How many moles are equal to 2.09 x 10-7 atoms of Sodium?

Calcium is located on the left side of the periodic table in the fourth row. Where can you find the elements that are in the same family as calcium

At what velocity (m/s) must a 342.6 kg object be moving in order to possess a kinetic energy of 2.0 J?

If you have 6.02 x 10 ^23 molecules of water in a glass, how many moles do you have? •1 •2 •3 •4

Which statement is true for all equilibrium systems? A. The mass of the reactants is equal to the mass of the products. B. The addition of a catalyst changes the equilibrium concentrations. C.

6p, 6q, 6r, and 6s are like terms. true false user: - 8 is a term. true false

Which statement (s) is/are true of acid-catalyzed alcohol dehydrations? A) Protonation of the alcohol is a fast step. B) Formation of a carbocation from the protonated alcohol is a slow step.

Water is composed of hydrogen and oxygen, True Or False

Why must chromosomes be copied before cells divide

4) Terry's dog is racing down the lane in the part toward the east. The dog travels 36 meters in 18 seconds before it stops running. The velocity of the dog is. A. 2 m/s east B. 4 m/s east C. 8 m/s east D. 10 m/s east

When a unicellular organism grows, the number of its cells increases. (True or False)