. Molecular weight of Co2, is
(a) 21 amu (b) 22 amu (C) 23 amu (d) 24 amu
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Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.