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Tasya [4]
3 years ago
15

q=m(delta)T Calculate the final temperature reached when 324 J of heat is added to a 22.5g iron bar initially at 20.0 degrees C.

The specific heat capacity of iron is 0.45 J/g degrees C.
Chemistry
1 answer:
TEA [102]3 years ago
8 0

Answer:

T(final) = 52°C

Explanation:

1st, you need to correct your heat flow formula => q = mcΔT.

m = 22.5g

c = 0.45 j/g·°C

ΔT = T(final) - T(initial) = T(final) - 20°C

q = (22.5g)(0.45j/g·°C)((final) - 20°C) = 324j

=> T(final) = [324j/(22.5g)(0.45j/g·°C)] + 20°C = 52°C

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See explanation

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Na(g)+ 1e^- → Na^-(g)      positive

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5 0
3 years ago
Determine the oxidation state of nitrogen in lino3.
Andre45 [30]

Answer : The oxidation state of nitrogen in LiNO_3 is, (+5)

Explanation :

Rules for the oxidation numbers :

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  • The oxidation number of  oxygen (O)  in compounds is usually -2, but it is -1 in the peroxides.
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The given compound is, LiNO_3

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Hence, the oxidation state of N is, (+5)

3 0
4 years ago
Read 2 more answers
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