Question

Calculate the amount of heat needed to melt 57.8 g of solid ethanol ( CH 3 CH 2 OH ) and bring it to a temperature of 33.4 °C . Be sure your answer has a unit symbol and the correct number of significant digits.

Answer #1

Calculate the amount of heat needed to melt 91.5g of solid
benzene ( C6H6 ) and bring it to a temperature of 60.6°C . Round
your answer to 3 significant digits. Also, be sure your answer
contains a unit symbol.

Calculate the amount of heat needed to melt
C6H6
) and bring it to a temperature of
3
significant digits. Also, be sure your answer contains a unit
symbol.

Calculate the amount of heat needed to boil 21.3g of ethanol (
CH3CH2OH ), beginning from a temperature of 31.4°C . Be sure your
answer has a unit symbol and the correct number of significant
digits
please put the correct number of significant digits

Calculate the amount of heat needed to boil 183.g of ethanol (
CH3CH2OH ), beginning from a temperature of 33.9°C . Round your
answer to 3 significant digits. Also, be sure your answer contains
a unit symbol.

The heat of vaporization
ΔHv
of acetone
OCCH32
is
32.0
/kJmol
. Calculate the change in entropy
ΔS
when
273.g
of acetone boils at
56.5°C
.
Be sure your answer contains a unit symbol and the correct
number of significant digits.

The heat of vaporization ?Hv of butane C4H10 is 21.0 /kJmol .
Calculate the change in entropy ?S when 9.9g of butane condenses at
?0.5°C . Be sure your answer contains a unit symbol and the correct
number of significant digits.

Calculate the amount of heat required to heat a 40 kg sample of
ethanol from 15.0 ∘C to 18.0 ∘C. Specific heat capacity of ethanol
is 2.42 J/g∘C.
Express your answer using two significant figures.

calculate the amount of heat (in kl) required to raise the
temperature of 79 g sample of ethanol from 298 k to 385 k. the
specific heat capacity of ethanol 2.42 J/g C.the boiling point of
ethanol and delta Hvap are given 78.4 C and 38.56 KJ/mol
**16.6 IS WRONG SOULTION TO THIS QUESTION
Please Help

A bomb calorimeter has a heat
capacity of 1769 J/oC. A 0.1375 –g piece of solid magnesium is
burned in the calorimeter that contains exactly 300 g of water. The
observed temperature increase is 1.126oC. Calculate the heat given
off by the burning magnesium in kJ/g and kJ/mol. Show all work and
correct significant figures.

Aqueous hydrochloric acid reacts with solid sodium hydroxide to
produce aqueous sodium chloride and liquid water. If 4.42 g of
sodium chloride is produced from the reaction of 5.8 g of
hydrochloric acid and 4.8 g of sodium hydroxide, calculate the
percent yield of sodium chloride. Be sure your answer has the
correct number of significant digits in it.

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