Question

no of moles in 20g Mgso4​

Answer 1

Answer:

0.167

Explanation:

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Answer 2

Answer:

Number of moles in 20 g $MgSO_{4}$ is 0.167 moles.

Explanation:

Number of moles = Given mass ÷ molar mass

Given mass = 20 g

$MgSO_{4}$ contains 1 Mg, 1 S, and 4 O atoms.

Atomic mass of Magnesium = 24 g/mol

Atomic mass of sulphur = 32 g/mol

Atomic mass of oxygen = 16 g/mol

Molar mass of $MgSO_{4}$ = (1×24) + (1×32) + (4×16)

                                     = 120 g/mol

Number of moles = given mass ÷ molar mass

                             = $\frac{20}{120}$

                             = 0.167 moles

Therefore the number of moles in 20 g $MgSO_{4}$ = 0.167 moles