Question

calculate the number of moles​

Answer 1

FORMULA

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NO OF MOLES = MASS IN GRAM /MOLAR MASS

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n=mass(g)/M

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mass in (g) = 252g

Molarmass = 1+14+16×3 = 63g/mol

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n = 252g / 63g/mol

n= 4mol☆ ANSWER☆

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Answer 2

Answer:

No of moles of HNO3 = 4                                          

Explanation:

Molar mass of HNO3   = 1 + 14 + 3*16

                    = 15 + 48

                   = 63 gram/mole

No of moles = Given mass / Molar mass

                     = 252/63

                     = 4