What is the mass in gram of 1 atom of sodium (Na) ?

The study of the composition of matter is?

What is a hypothesis

Which of these is common to all chemical changes? A) A change of state occurs. B) A change of color occurs. C) A new substance is produced. D) Heat is released into the air.

Copper has an atomic number 29. That means that there are 29 protons in the nucleus of each copper atom. That's what the atomic number is; the number of protons in an atom of a certain element.

Which of the following is not a renewable energy a. biomass b. coal c. solar d. water e. wind

All of the following are examples of electrolytic solutions, except __. A) Ocean water B) Pure water C) Strong hydrochloric acid D) potassium chloride solution

How many stereoisomers are possible for 1 2-dichlorocyclopentane?

Consider the balanced equation K, Croa (aq) + Pb (NO3) 2 (aq) → PbCrO4 (s) + 2KNO3 (aq) If 25.0 ml of a 1.00M K, Cro, solution is mixed with 10.0 ml of a 0.500M Pb (NO3) 2 solution. a. How many moles of potassium chromate are present? b.

Name 3 organisms that would be classified as eukaryotic, multicellular, and heterotrophic.

A bond formed by electrical attraction between two oppositely charged ions is called