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Hemsida Ht2011 termokemi, kap1-2 Kemi B.pdf

Hemsida Ht2011 termokemi, kap1-2 Kemi B.pdf

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d) Hur mycket värme får man av 1g butan?<br />

Sökt: Värmemängd q<br />

Givet: ΔH=- 2672 kJ/mol<br />

n=m/M<br />

m= 1g<br />

M= 4·12+10=58 g/mol<br />

Beräkning: n=0,01724 mol<br />

q=n· ΔH=46 kJ<br />

Svar: 46 kJ värme får man ut av 1g butan<br />

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