ANSWER FAST PLEASE Which are conserved during a chemical reaction?
A. molecules and volume
B. mass and atoms
C. volume and mass
D. atoms and molecules

How many moles are in 7.2 x 10^23 carbon molecules? (*round to the nearest hundredth and include the unit "mol c" after your number) question 6 options:

Ineed to find the answer of this question because i dont understand it

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1: