How many water molecules are in 2.1 moles of water? Question 5 options:

2.86 x 10^23

3.4 x 10^23

0.34 x 10^23

1.26 x 10^24

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

How do you convert 4 mmol of bromobenzene to ml?

What is the name of the enzyme that forms at the start of transcription?