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Vesnalui [34]
2 years ago
7

Please help/show work!

Chemistry
1 answer:
Keith_Richards [23]2 years ago
3 0

Answer:

7.00335g

Explanation:

n=\frac{V}{V_m} \\n = \frac{11.2}{22.4} \\n= 0.5 mol

n=\frac{m}{M} \\m=nM\\m=(0.5)(14.0067)\\m=7.00335g

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Explain why an insoluble compound added to water is considered a nonelectrolyte.
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A non-electrolyte is defined as a solution which does not contain any ions and hence, it is unable to conduct electricity.

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Similarly, a compound that is insoluble in water will not dissociate into ions. Hence, this type of solution will not be able to conduct electricity.

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Give the quantum number set for one electron in the 3p sub level of a sulfur (S)
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Answer:- Atomic number for sulfur is 16 and it's electron configuration is 1s^2 2s^2 2p^6 3s^2 3p^4. Here, there are total for electrons in 3p and the set of quantum numbers for these 4 electrons would be as..

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for the second electron of 3p-

n = 3, l = 1, ml = 0 and ms = +(1/2)

for the third electron of 3p-

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and for the fourth electron of 3p-

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3 0
3 years ago
The size (radius) of an oxygen molecule is about 2.0 ×10−10m. Make a rough estimate of the pressure at which the finite volume o
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Answer:

Explanation:

We can calculate the volume  of the oxygen molecule as the radius of oxygen molecule is given as 2×10⁻¹⁰m.

We know that volume=4/3×πr³

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R is real gas constant

So to calculate pressure using the  formula;

PV=NkT

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P=[1×1.38×10⁻²³J/K×300]/[33.40×10⁻³⁰m³

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NH4 oxidation number
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The answer is +1! Have a great day!
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