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devlian [24]
3 years ago
14

q=mcΔT. Given this equation find the change in temperature. q = 600 J, m= 25.0 g, c= 0.897 J/g°C. What is ΔT?

Chemistry
1 answer:
hodyreva [135]3 years ago
7 0

Answer:

Change in temperature = ΔT = 26.8°C

Explanation:

Given data:

Heat absorbed = 600 j

Mass = 25.0 g

Specific heat capacity = 0.897j /g°C

Change in temperature = ΔT= ?

Solution:

Formula:

q = mcΔT

600 j =  25.0 g ×0.897 j/g°C×ΔT

600 j =  22.425 j/°C×ΔT

ΔT = 600 j /22.425 j/°C

ΔT = 26.8°C

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Answer:

43.89 min

Explanation:

Given that:-

The speed of light = 3.00\times 10^8\ m/s

The distance = 7.9\times 10^8\ km

The conversion of distance in km to distance into m is shown below as:-

1 km = 1000 m

So,

Distance = 7.9\times 10^8\times 1000\ m=7.9\times 10^{11}\ m

The relation between speed distance and time is shown below as:-

Speed=\frac{Distance}{Time}

Thus,

3.00\times 10^8=\frac{7.9\times 10^{11}}{Time}

300000000\times time=10^{11}\times \:7.9\ s

Time = 2633.33 seconds

Also, 1 s = 1/60 min

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Time=\frac{2633.33}{60}\ min=43.89\ min

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The atomic number of silver-108 is 47. Its mass number is 108. How many protons and neutrons does silver-108 contain? A. 47 prot
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What is the iupac name for this compound ch3-c(ch3) 2-ch2-chcl-ch3? ​
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The IUPAC name of the above mentioned compound is "2-Chloro-4,4-dimethylpentane"

<u>Exaplanation:</u>

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The H 2 produced in a chemical reaction is collected through water in a eudiometer. If the pressure in the eudiometer is 760.0 t
siniylev [52]

Answer:

the pressure (torr) of theH₂ gas is 736.2 torr

Explanation:

Given that

The H₂ gas  produced in a chemical reaction is collected through water in a eudiometer; during this process, the gas collected contains some droplets of water vapor along with these gas.

So; the total pressure in the eudiometer = Pressure in the H₂ gas  - Pressure of the water vapor

Where;

P_{Totsl} =  total pressure in the eudiometer = 760.0 torr

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- P_{H_2} = + P_{H_2O} - P_{Totsl}

P_{H_2}  = - P_{H_2O} + P_{Totsl}

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3 years ago
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