Question

Long Answer Questions Vertly try calculating that 5 moles of co, and 5 moles of 11, do not luve the same mans (b) 240 of calcium and 240 g magnesium elements have a mole ratio of 3:5​

Answer 1

Answer:

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Answer 2

(a) Mass of given sample = Number of moles X Molar mass

Thus, the mass of 5 moles of CO2 = 5 × 44 (Molar mass of CO2 = 44g/mole)

= 220g

The mass of 5 moles of H2O = 5 × 18 (Molar mass of H2O = 18g/mole)

= 90g

Therefore, we can say that 5 moles of CO2 and 5 moles of H2O do not have the same mass.

(b) Number of moles of given sample:

Thus, number of moles of 240 g of calcium:

n1 =

n1 = 6

Number of moles of 240 g magnesium:

n2 =

n2 = 10

Therefore, the ratio of number of moles: n1 : n2

6:10

3:5

Now, we can say that 240 g of calcium and 240 g magnesium elements have a mole ratio of 3:5.

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