8. Which sample would contain the most number of atoms? a. 10g K
b. 10g Pt
c. 10g Li
d. A-C would have the same number of atoms.

How many grams of magnesium metal will react completely with 8.3 liters of 5.5 m hcl? show all of the work needed to solve this problem. mg (s) + 2hcl (aq) → mgcl2 (aq) + h2 (g)

Which position represents spring in the southern hemisphere? a) b) c) d)

What is the formula for the compound dinitrogen pentoxide? a. n4o5 b. n5o4 c. n4o6 d. n5o2 e. n2o5