How many molecules are contained in. 900 mol O2?

What happens to the electrons in the outer shell as you move across a period

We are struggling in identifying which ones are mixtures which ones are not. Is paper a mixture?

Which statement best descibes what happens when a person sees a orange t-shirt? A. Orange light absorbed by the t-shirt is perceived by the human eye. B. Orange light reflected from the t-shirt enters human eyes. C.

If the mass of a liquid is 60 g and the volume is measured at 15 ML, what is the density?

Suppose you wanted to dissolve 106 g of Na2CO3 in enough H2O to make 6.00 L of solution. (1) What is the molar mass of Na2CO3? (2) What is the molarity of this solution?

Which statements describe the principles of the Big Bang theory

Is ice cream a mechanical mixture or solution why?

Which term is used to describe the attraction that an oxygen atom has for the electrons in a chemical bond?

Suppose you wanted to dissolve 109 g of sodium carbonate in enough water to make 6.00 L of solution. What is the molarity of this solution?

0.0055 in scientific notation