950 J of energy is used to heat an unknown mass of copper from 20.0° C to 95.0° C. The specific heat of copper = 0.39 J/(g·°C).
2 answers:
Answer:
32g
Explanation:
I just took the test and got it right
Answer:
32.7 g
Explanation:
Q = MC∆T
∆T = 95-20 = 75
C= 0.39
Q= 950J
from first formula
m = Q/c∆T
m = 950/0.39*75
m = 32.47 h
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Heat= latent heat of fusion+sensible heat+ latent heat of vapourization
=(79.7*5)+(5*100*1)+(540*5)
=3598.5 cal
Should be 1.8L.
2 moles of hydrogen react with 1 mole of oxygen. If 2 moles of hydrogen is 3.6L, 1 mole of oxygen should be 1.8L.
Answer:
17.1 mol
Explanation:
(8.68g/mL * 125 mL) = 1085 g
1085 g/ (63.55 g/mol) = 17.1 mol
