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3 years ago

How much heat is needed to warm 250g of water from 22°C to 98°C ?

Chemistry

1 answer:

Ksju [112]3 years ago

6 0

Answer:

79'420J

Explanation:

We know mass 250g and

∆T=98°C -22°C

=76°C

The specific heat capacity for water is 4,18Zj/g°C

THEREFORE

∆H=250g•14,8j/g°C •76°C

=79'420J

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Explanation : Given,

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First we have to determine the moles of $SF_6$ .

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From the balanced chemical reaction we conclude that,

As, 8 moles of $SF_6$ produced from 1 mole of $S_8$

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Answer:

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Explanation:

We will need a balanced equation with moles, so let's gather all the information in one place.

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$n = \text{17.4 mol Al}\times \dfrac{\text{3 mol O}_{2}}{\text{4 mol Al}}= \text{13.05 mol O}_{2}$

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3 years ago

How much heat is needed to warm 250g of water from 22°C to 98°C ?​

How much heat is needed to warm 250g of water from 22°C to 98°C ?