A solution contains 11% by mass of sodium chloride. this means that __________.

1 answer:

5 0

As a solution is contained with 11% by mass of sodium chloride, this will therefore conclude that the 100g of the solution is composed of the 11g of the sodium chloride. In which, the correct answer would be specified as letter c.

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How many moles of MgO can be made from 5 moles of Mg?<br> 2Mg + O2 -> 2MgO

kkurt [141]

Answer:

Explanation:

The expected product is MgO, so the 1-to-1 mole ratio Mg to O in the product is all that is required.

3 0

2 years ago

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aleksklad [387]

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natta225 [31]

According to Graham's Law of Diffusion," Diffusion of Gas is inversely proportional to square root of its Molecular Mass or Density".

rᵇ/rᵃ =   $\sqrt{da/db}$
Or,
  rᵇ/rᵃ =   $\sqrt{Ma/Mb}$ ----- (1)
As,
Ma = 275 g/mol

Mb = 205 g/mol

Putting Values in eq.1,

rᵇ/rᵃ =   $\sqrt{275/205}$

rᵇ/rᵃ = 1.15

Result:
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6 0

2 years ago

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NeTakaya

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4 0

2 years ago

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Greeley [361]

Answer:

0.444 mol/L

Explanation: