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Tems11 [23]
3 years ago
7

Why do solids react faster in powder form than in lump form

Chemistry
1 answer:
miv72 [106K]3 years ago
7 0
There is more surface area so there’s more to react with all together
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Select the correct answer.
Fittoniya [83]

Answer:

subscribe to me on you-tube for brainliest custom link since u cant do a you-tube link :/

https://screenshare.host/B7N8NT

Explanation:

7 0
3 years ago
During the discussion of gaseous diffusion for enriching uranium, it was claimed that 235UF6 diffuses 0.4% faster than 238UF6. S
Kay [80]

<u>Answer:</u> The below calculations proves that the rate of diffusion of ^{235}UF_6 is 0.4 % faster than the rate of diffusion of ^{238}UF_6

<u>Explanation:</u>

To calculate the rate of diffusion of gas, we use Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

We are given:

Molar mass of ^{235}UF_6=349.034348g/mol

Molar mass of ^{238}UF_6=352.041206g/mol

By taking their ratio, we get:

\frac{Rate_{(^{235}UF_6)}}{Rate_{(^{238}UF_6)}}=\sqrt{\frac{M_{(^{238}UF_6)}}{M_{(^{235}UF_6)}}}

\frac{Rate_{(^{235}UF_6)}}{Rate_{(^{238}UF_6)}}=\sqrt{\frac{352.041206}{349.034348}}\\\\\frac{Rate_{(^{235}UF_6)}}{Rate_{(^{238}UF_6)}}=\frac{1.00429816}{1}

From the above relation, it is clear that rate of effusion of ^{235}UF_6 is faster than ^{238}UF_6

Difference in the rate of both the gases, Rate_{(^{235}UF_6)}-Rate_{(^{238}UF_6)}=1.00429816-1=0.00429816

To calculate the percentage increase in the rate, we use the equation:

\%\text{ increase}=\frac{\Delta R}{Rate_{(^{235}UF_6)}}\times 100

Putting values in above equation, we get:

\%\text{ increase}=\frac{0.00429816}{1.00429816}\times 100\\\\\%\text{ increase}=0.4\%

The above calculations proves that the rate of diffusion of ^{235}UF_6 is 0.4 % faster than the rate of diffusion of ^{238}UF_6

3 0
3 years ago
The element with the greatest density is osmium, which has
Vinil7 [7]

Answer:

Mass is 725.46g/cm

Explanation:

Mass = density × volume = 22.6g/cm^3 × 32.1cm^2 = 725.46g/cm

5 0
3 years ago
The element carbon is also called the "element of live". Declare.
wel

Answer:

The molecules of all living things contain backbones that consist of carbon atoms.

Explanation:

Millions of carbon-based compounds make up the cells and other structures of living organisms.  

Organisms need these compounds to live, grow, and reproduce. Without them, life could not exist,

7 0
3 years ago
An alkaline earth metal forms a compound with oxygen with the formula ________. (the symbol m represents any one of the alkaline
omeli [17]
The answer of your question is - MO
3 0
4 years ago
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