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Yuri [45]
3 years ago
5

How much energy is required to raise the temperature of 3 kg of iron from 20° C to 25°C? Use the table below and this equation:

Q=mc Delta T

Chemistry
2 answers:
madreJ [45]3 years ago
8 0

Answer:

6750 J

Explanation:

ElenaW [278]3 years ago
7 0

The energy required to raise the temperature of 3 kg of iron from 20° C to 25°C is 6,750 J( Option B)

<u>Explanation:</u>

Given:

Specific Heat capacity of Iron= 0.450 J/ g °C

To Find:

Required Energy to raise the Temperature

Formula:

Amount of energy required is given by the formula,

Q = mC (ΔT)

Solution:

M = mass of the iron in g

So 3 kg = 3000 g

C = specific heat of iron = 0.450 J/ g °C [ from the given table]

ΔT = change in temperature = 25° C - 20°C = 5°C

Plugin the values, we will get,

Q = 3000 g ×  0.450 J/ g °C ×  5°C

 = 6,750 J

So the energy required is 6,750 J.

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Calculate the no. of each atoms presents in 10 grams of calcium carbonate.
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\\ \sf\longmapsto CaCO_3

\\ \sf\longmapsto 40u+12u+3(16u)

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\boxed{\sf No\:of\;moles=\dfrac{Given\:Mass}{Molar\:Mass}}

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1 mole = N_A =6.022\times 10^{23} molecules/ atoms

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b ) Fraction of propylene units:

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8 0
3 years ago
Is this right??? If not gimme da right answer plz
NemiM [27]

Answer:

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Explanation:

well, probably. they kicked me out of math class because I put a live chicken in the classroom and it pooped everywhere, so I had to clean it up and bring it back where I found it (which is the side of the road.)

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