What conversion factor should be used to convert mass to moles?
a. 1mol/number of grams.
b. 6.02x1024mol/number of grams
c. 1.05mol/number of grams
d. 1mol x number of grams

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:

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

Fred is studying a substance that is made out of only one element. this means that