The number of protons in an uncharged atom equals the number of electrons.
Given :
Number of He atoms,
atoms.
To Find :
How many grams are their in given number of He atoms.
Solution :
We know, molecular mass of He is 4 g. It means that their are
atoms in 4 g of He.
Let, number of gram He in
atoms is x , so :

Therefore, grams of He atoms is 22.58 g .
Answer:
periosteum, compact bone, cancellous, bone marrow
Is the following reaction spontaneous at 298 K? Answer by calculating ΔG. H2O(g) + C(s) → CO(g) + H2(g) ΔH = 131.3 kJ/mole ΔS = 134 J/mole˙K
No