Question
In: Chemistry
1. what is the energy change when the temperature of 10.4 grams of solid graphite is...
1.
what is the energy change when the temperature of 10.4 grams of
solid graphite is decreased from 37.9 C to 22.5 C?
2. How much energy is required to raise the temperature of
12.3 grams of solid sulfur from 20.7 C to 37.9 C?
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
What does change in bond energy mean? I get that when a solid turns into a...
What does change in bond energy mean? I get that when a solid
turns into a liquid that there is a change in bond energy, but what
exactly does that mean? If the bond of a solid breaks and turns
into a liquid will it have a change in bond energy? if the bond
energy changes will it decrease or increse?
Based on the thermodynamic properties provided for water, determine the energy change when the temperature of...
Based on the thermodynamic properties provided for water,
determine the energy change when the temperature of 1.45 kg of
water decreased from 109 °C to 23.0 °C.
Based on the thermodynamic properties provided for water, determine the energy change when the temperature of...
Based on the thermodynamic properties provided for water,
determine the energy change when the temperature of 0.750 kg of
water decreased from 117 °C to 38.5 °C.
Property
Value
Units
Melting point
0
°C
Boiling point
100.0
°C
ΔHfus
6.01
kJ/mol
ΔHvap
40.67
kJ/mol
cp (s)
37.1
J/mol · °C
cp (l)
75.3
J/mol · °C
cp (g)
33.6
J/mol · °C
Calculate the energy change (with the correct sign) when the temperature of 100.0 mL of liquid...
Calculate the energy change (with the correct sign) when the
temperature of 100.0 mL of liquid water decreases by 3.40 ∘ C.
Calculate the mass of KCl needed to absorb the same amount of
energy when dissolved in water. ΔHsolution(KCl)=983.5 J/mol.
Calculate the energy change (with the correct sign) when the temperature of 100.0 mL of liquid...
Calculate the energy change (with
the correct sign) when the temperature of 100.0 mL of liquid water
increases by 4.40 °C.
Calculate the mass of NaO2CCH3 needed to release this amount of
energy when dissolved in water. ΔHsolution(NaO2CCH3) = -989.5
J/mol.
Based on the thermodynamic properties provided for water, determine the energy change when the temperature of...
Based on the thermodynamic properties provided for water,
determine the energy change when the temperature of 0.750 kg of
water decreased from 111 °C to 51.0 °C.
Melting point
0
°C
Boiling point
100.0
°C
ΔHfus
6.01
kJ/mol
ΔHvap
40.67
kJ/mol
cp (s)
37.1
J/mol · °C
cp (l)
75.3
J/mol · °C
cp (g)
33.6
J/mol · °C
What is the experimental yield (in grams) of the solid product when the percent yield is...
What is the experimental yield (in grams) of the solid product
when the percent yield is 83.5% with 11.23 g of iron(II) nitrate
reacting in solution with excess sodium phosphate?
Fe(NO3)2(aq) +
Na3PO4(aq) -->
Fe3(PO4)2(s) +
NaNO3(aq) [unbalanced]
What is the percent yield of the solid product when 10.95 g of
barium nitrate reacts in solution with excess sodium phosphate and
4.185 g of the precipitate is experimentally obtained?
Ba(NO3)2(aq) +
Na3PO4(aq) -->
Ba3(PO4)2(s) +
NaNO3(aq) [unbalanced]
What is the...
The heat energy associated with a change in temperature that does not involve a change in...
The heat energy associated with a change in temperature that
does not involve a change in phase is given by
q=msΔT
where q is heat in joules, m is mass in grams,
s is specific heat in joules per gram-degree Celsius,
J/(g⋅∘C), and ΔT is the temperature change in degrees
Celsius. The heat energy associated with a change in phase at
constant temperature is given by
q=mΔH
where q is heat in joules, m is mass in grams,
and ΔH...
a)What is the mass (in grams) of the solid product when 7.5 g of silver nitrate...
a)What is the mass (in grams) of the solid product when 7.5 g of
silver nitrate reacts in solution with excess sodium
carbonate?AgNO3(aq) + Na2CO3(aq)
--> Ag2CO3(s) + NaNO3(aq)
[unbalanced]
b)What is the mass (in grams) of the precipitate when 7.62 g of
silver nitrate reacts in solution with excess sodium
phosphate?AgNO3(aq) + Na3PO4(aq)
--> Ag3PO4(s) + NaNO3(aq)
[unbalanced]
1-A solution has a temperature change of 20 K. What is the temperature change in degree...
1-A solution has a temperature change of 20 K. What is the
temperature change in degree Celsius?
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Question 2
Students used two thermometers in Thermo lab. If both
thermometers consistently read temperature exactly 1.0 degree
higher than the actual temperature, how does this affect the
experimental molar heat of neutralization?
A-It has an unknown impact on the molar heat of
neutrailization.
B-This will make the molar heat of neutrailization higher
C-Since the temperature differences are used in...
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