For this you need the atomic (molecular) mass of H2. Take the number of moles and multiply it by the Atomic Mass. Divide by one mole for units to cancel.
3.00 moles H2 × 2.02 = 6.06 grams H2
3 moles of Helium would have a mass of 12g
1 mole has 6.023 x 1023 atoms.
So 3 moles have 3 x 6.023 x 1023 atoms
3 moles of helium are equivalent to 12 g.
6,1x10-3 moles of carbon 36,7350592277.1020 atoms.
1 mole = 6.0 x 1023 atoms So, 3 mole = 18.0 x 1023 atoms
3 moles of Ca would have 1.806 × 10^24 atoms.
1.8x10*24
3.7x10^3 millimoles is 3.7 moles. To convert moles to atoms, multiply by avagadro's number. 3.7 x 6.022x10^23 is 2.22814x10^24 atoms.
6,1x10-3 moles of carbon 36,7350592277.1020 atoms.
NH3 is balanced at 1:3, so in 3 moles NH3 there are 3*3 = 9 moles H atoms
1 mole = 6.0 x 1023 atoms So, 3 mole = 18.0 x 1023 atoms
3,00 moles of Li have 18,066422571.10e23 atoms.
In 3 moles of CH4, there are 18.06 x 10^23 times Hydrogen atoms.
3 moles of Ca would have 1.806 × 10^24 atoms.
3
Since there are no subscripts, there is .800 moles of Oxygen atoms and .800 moles of Magnesium because there is .800 moles of the compound.
96.195
3
Methane (CH4) has four atoms of hydrogen per molecule. If there are 3 moles of methane, then there are 12 moles of hydrogen.
1.8x10*24