Answer :
Answer:
[tex] \huge{ \boxed{4.64 \: g}}[/tex]
Explanation:
The number of grams of NaOH can be found by using the formula;
mass = number of moles × molar mass
Molar mass of NaOH = 40 g/mol
Since the number of particles was given the number of moles of the compound can be found by using the formula;
[tex] n = \dfrac{N}{L} [/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question;
N = 7.00 × 10²² molecules
[tex] \therefore \: n = \dfrac{7.00 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.116 \: moles[/tex]
The number of moles attained is then substituted into the formula for finding the mass of the compound.
[tex] \therefore \: mass = 0.116 \times 40 = 4.64 \: g[/tex]