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Vinvika [58]
3 years ago
10

How many moles of MgS2O3 are in 171 g of the compound?

Chemistry
1 answer:
Alexxx [7]3 years ago
8 0
Divide the 181g by the mol mass of the compound. Just add up the masses of the various elements.
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What mass of nitrogen Dioxide, NO2, would be produced by the decomposition of 75.0g of copper (II) nitrate?
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When copper(II) nitrate Cu(NO3)2 decomposition, the final products will determine by temperature. But the ratio of Cu(NO3)2 and NO2 is constant: 1:2. So mole number of 75 g is 0.4 mol. So NO2 is 0.8 mol and is 36.8 g.
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3 years ago
A 1. 00 ml sample of an unknown gas effuses in 11. 1 min. an equal volume of h2 in the same apparatus under the same conditions
Damm [24]

A 1. 00 ml sample of an unknown gas effuses in 11. 1 min. an equal volume of h2 in the same apparatus under the same conditions effuses in 2. 42 minutes then the molar mass of the unknown gas is 41.9.

Molar mass of H2 = 2

Molar mass of unknown gas = ?

rate 1 = 11.1

rate 2 = 2.42

<h3>What is graham law? </h3>

Graham's law states that the rate of diffusion or effusion of a given gas is inversely proportional to the square root of its molar mass.

By apply graham law

Rate1/rate2 = sqrt(MW2/MW1)

[\frac{rate1}{rate2} ]^{2} = \frac{MW2}{2} \\\\\\mw= 2[\frac{11.1}{2.42} ]^{2} \\\\= 20.97 X 2 \\\\= 41.9

Thus, we found that the molar mass of the unknown gas is 41.9.

Learn more about graham's law: brainly.com/question/12415336

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4 0
2 years ago
Whats Fe2O3 compound name
Nady [450]

Answer:

Iron(III) oxide  and its common name is Ferric Oxide

Explanation:

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PLS HELP A gas has a volume of 250 mL at 96.5 kPa. What will the pressure of the gas be if the
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Use the balanced equation below to answer the question that follows
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