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LuckyWell [14K]
3 years ago
13

Which is warmer -30C or -30 F?​

Chemistry
2 answers:
Burka [1]3 years ago
8 0

-30°C is more warmer than -30°F...!

<h2>How??</h2>
  • Always Celsius is warmer than farheniet and also in coldness Celsius is colder than farheneit.
quester [9]3 years ago
3 0

-30°F is warmer than -30°C.

The -ve sign is used when the temperature drops down. Celsius is the greater unit. By converting, -30°F = -1.11°C (approx.) We know that, -1.11 > -30. So, -30°F (-1.11°C) is warmer than -30°C.

Formula :-

(x°C × 9/5) + 32 = y°F

_____

Hope it helps ⚜

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4 years ago
In the lab, you mix two solutions (each originally at the same temperature) and the temperature of the resulting solution decrea
Archy [21]

Answer:

The correct answer is option B.

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4 0
4 years ago
The mole fraction of NaCl in an aqueous solution is 0.132. What is the weight/weight percent of NaCl in this solution?
Marrrta [24]

Answer:

\% w/w=33.1\%

Explanation:

Hello,

In this case, since the solution is formed by sodium chloride and water, we understand that for one mole of solution, we have 0.132 moles of sodium chloride and 0.868 moles of water, therefore, by using their molar masses we can compute their masses in the solution:

m_{NaCl}=0.132molNaCl*\frac{58.44gNaCl}{1molNaCl}=7.714gNaCl\\ \\m_{H_2O}=0.868molH_2O*\frac{18gH_2O}{1molH_2O}=15.624gH_2O

Thereby, we can compute the weight/weight percent as follows:

\% w/w=\frac{m_{NaCl}}{m_{H_2O}+m_{NaCl}}*100\%

So we use the previously computed masses:

\% w/w=\frac{7.714g}{7.714g+15.624g}*100\%  \\\\\% w/w=33.1\%

Best regards.

4 0
4 years ago
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