Given the following: 30 grams of H3PO4, find the number of moles

Number of mole of H₃PO₄ = 0.306 mole

Explanation:

From the question given above, the following data were obtained:

Mass of H₃PO₄ = 30 g

Number of mole of H₃PO₄ =?

Next, we shall determine the molar mass of H₃PO₄. This can be obtained as follow:

Molar mass of H₃PO₄ = (3×1) + 31 + (4×16)

= 3 + 31 + 64

= 98 g/mol

Finally, we shall determine the number of mole in 30 g of H₃PO₄ as follow:

Mass of H₃PO₄ = 30 g

Molar mass of H₃PO₄ = 98

Number of mole of H₃PO₄ =?

Mole = mass / molar mass

Number of mole of H₃PO₄ = 30 / 98

Number of mole of H₃PO₄ = 0.306 mole

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

може ли да зареждате повече информация, моля