How many hydrogen atoms are in 4 molecules of isopropyl alcohol, c3h7o?

There are 28 H atoms in four molecules of C₃H₇O.

No of H atoms = 4 molecules C₃H₇O × (7 H atoms/1 molecule C₃H₇O)

= 28 H atoms

chemical properties are the characteristic of matter which can only be observed by changing the chemical identity of a sample like flammability reactivity and toxicity.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.