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3 years ago

What is normal body temperature in kelvins? Express your answer in kelvins using four significant figures.

Chemistry

1 answer:

nlexa [21]3 years ago

5 0

Answer : The normal body temperature in kelvins is, 310.2 K

Explanation :

The normal body temperature for human in degree Celsius is, $37^oC$

Now we have to convert it into kelvin.

The conversion used for the temperature from degree Celsius to Kelvin is:

$K=273.15+^oC$

where,

$K$ = temperature in Kelvin

$^oC$ = temperature in centigrade

As we are given the temperature, $37^oC$

So,

$K=273.15+^oC$

$K=273.15+(37^oC)$

$K=310.15\approx 310.2$

Thus, the normal body temperature in kelvins is, 310.2 K

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An aqueous solution contains 0.397 M ammonia. Calculate the pH of the solution after the addition of 4.63 x 10-2 moles of perchl

SSSSS [86.1K]

Answer:

9.308

Explanation:

The computation of the pH of the given solution is shown below:

But before we need to determine the HI molarity which is

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Now

As we know that

$NH_3 + HI = NH_4I$

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Now the molarity of $NH_3$ left is

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= 4.692

Now as we know that

pH = 14 - pOH

= 14 - pOH

= 14 - 4.692

= 9.308

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2 years ago

An electrode has a potential of 1.201 V with respect to a saturated silver-silver chloride electrode. What would the electrodes

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Answer:

The potential wrt. calomel is 1.254 V

Explanation:

Given:

Potential wrt. silver chloride $E_{Ag} = 1.201$ V

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$=$ potential wrt. hydrogen + potential wrt. SEC

$= 1.004 +0.241$

$= 1.254$ V

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