2 years ago

You have 281 kilojoules how many kilocalories is it need to know ASAP

Chemistry

1 answer:

Paul [167]2 years ago

5 0

67.116 kilocalories is the answer

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3 years ago

What pH would you expect an acid to have?

kondor19780726 [428]

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3 years ago

A 25.0g tin sample was placed in boiling water at 99.5 C until it had the same temperature. Afterwards, the tin sample was place

MrMuchimi

Answer : The specific heat of tin is, 0.213 J/g.K

Explanation :

Formula used :

$q=m\times c\times (T_{final}-T_{initial})$

where,

q = amount of heat lost = -399.4 J

c = specific heat capacity of tin = ?

m = mass of tin = 25.0 g

$T_{final}$ = final temperature = $24.5^oC=273+24.5=297.5K$

$T_{initial}$ = initial temperature = $99.5^oC=273+99.5=372.5K$

Now put all the given values in the above formula, we get:

$-399.4J=25.0g\times c\times (297.5-372.5)K$

$c=0.213J/g.K$

Therefore, the specific heat of tin is, 0.213 J/g.K

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3 years ago

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san4es73 [151]

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Explanation:

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Answer:

protons and neutrons

Explanation:

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3 years ago