How many hydrogen atoms in 5 H2O? [ Select ]
A:3
B:10
C:7
D:5
How many oxygen atoms in 5 H2O?
Select
A:3
B:10
C:7
D:5

How many different types of atoms in 5 H2O?
[ Select ]
A:10
B:3
C:7
D:5
How many total atoms in 5 H2O?
[ Select ]
A:10
B:3
C:5
D:2
5 H2O is a
A: element
B: compound

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?