In a sample of h2so4 containing 200 sulfur (s) atoms, how many atoms of hydrogen (h) would there be? a. 200 b. 400 c. 1 d. 800

In a sample of H2SO4 that contain 200 S atom the number of hydrogen atoms  would be 400  atoms

explanation

there are two moles of H2  in H2SO4 therefore by use of ratio between S:H2 which is 1:2 atoms therefore the atoms of hydrogen = 2 x200 = 400 atoms

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

they are all solids.