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Thermochemistry
Page 6
Questions (383)
If the heat of combustion for a specific compound is -1460.0 kJ/mol and its molar mass is 55.75 g/mol, how many grams of this
2 answers
asked by
catey
964 views
How much heat is required to vaporize 1.00 L of CCl4 at its normal boiling point?
The following data are given for CCl4. Normal
1 answer
asked by
Ashleigh
981 views
A 2.461-g sample of glutamic acid, C5H9NO4 (147.13 g/mol) was burned in a bomb calorimeter with
excess oxygen. The temperature of
1 answer
asked by
Anthony
942 views
Use Hess's law to calculate the enthalpy change for the reaction:
3C(s) + 3H2(g) ¡æ C3H6(g) Given the following thermochemical
2 answers
asked by
Hailee
949 views
Given the following thermochemical data:
1) H2(g) + 1/2 O2(g) -> H2O(g) ∆H = -241kJ 2) C6H10(g) + 17/2 O2(g) -> 6CO2(g) +
3 answers
asked by
Dio
960 views
Magnesium metal reacts with HCl(aq) according to the equation: Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g)
In an experiment to
1 answer
asked by
Cali
943 views
Calculate the value of ΔHo for the reaction
2 CH4 (g) -> C2H6 (g) + H2 (g) given the following thermochemical equations: C2H2
2 answers
asked by
rhea
929 views
what two conditions must be met by a thermochemical equation so that its standard enthalpy change can be given the symbol delta
2 answers
asked by
Leslie
935 views
Given:
H3PO4(aq) + 3 NaOH(aq) �¨ 3 H2O(l) + Na3PO4(aq) ƒ¢H = -166.5 kJ What is the value for q (heat) if 4.00 g of NaOH
3 answers
asked by
Jake
931 views
Strontium metal is responsible for the red color in fireworks. Fireworks manufacturers use strontium carbonate, which can be
2 answers
asked by
Jess
910 views
Can someone help me with this question?
what two conditions must be met by a thermochemical equation so that its standard
2 answers
asked by
Leslie
912 views
In lab we did thermochemistry, where we are supposed to find the heats of solution, heat change of calorimeter and molar heat
1 answer
asked by
Rani
894 views
In a coffee cup calorimeter, 50 mL of 0.1 M HCl and 50 mL of 0.1 M NaOH are mixed to
yield the following reaction: HCl + NaOH
3 answers
asked by
Diana
913 views
According to the following thermochemical reaction, how much energy is involved in the reaction of 18.5 g of NaHCO3? Is the
4 answers
asked by
Jenna
907 views
Data: C(graphite) + O2(g) forms CO2 (ga) Delta H = -393.5kJ
H2(g) + 1/2O2(g) forms H2O(l)Delta H = 285.8kJ. CH3OH(l) +
2 answers
asked by
lavonne
891 views
What is the change in enthalpy of the following reaction?
2NaBr(aq) + PbCl2(aq) 2NaCl(aq) + PbBr2(aq) Given: NaCl: ∆H = -411 kJ
4 answers
asked by
Kat
863 views
Calculate the enthalpy change, ΔrH, for the following reaction,
4 NH3 (g) + 5 O2(g) → 4 NO (g) + 6 H2O (g) given the
1 answer
asked by
Hannah
837 views
Predict the heat output of the combustion of 1L of octane at 298K. It's mass density is.703 g/cm3
1 answer
asked by
deepsikha
821 views
Part A
Calculate the standard enthalpy change for the reaction 2A+B --->2C +2D Use the following data: Substance Delta H(kJ/mol)
2 answers
asked by
tina
827 views
Given the following thermochemical data:
1) C(s) + O2(g) -> CO2(g) ∆H = -393.5 kJ 2) H2(g) + 1/2 O2(g) -> H2O(l) ∆H = -285.8
2 answers
asked by
Jasmine
1,120 views
a 35.6g sample of ethanol (c2h5oh) is burned a bomb calorimeter, according to the following reaction. If the temperature rose
1 answer
asked by
and6260
809 views
Consider the following thermochemical equation:
CH4(g) + I2(g) --> CH3I(g) + HI(g) DH = +23 kJ What energy change occurs when 1.6
2 answers
asked by
Nisah
797 views
What is the standard heat of reaction (Delta H^0) for the decomposition of hydrogen peroxide?
2H2O2 (l) ==> 2H2O (l) + O2(g)
1 answer
asked by
Jack
808 views
If 15.0 kJ are released when 1.40 g of F2 reacts with an excess of SiH4, complete the thermochemical equation below.
SiH4(g) + 2
2 answers
asked by
Megan
790 views
The enthalpy of combustion of benzoic acid
(C6H5COOH) which is often used to calibrate calorimeters, is −3227 kJ/mol. When
2 answers
asked by
Austin
786 views
HNO3 (g) + 4H2 (g) „³ NH3 (g) + 3H2O (g)deltaH = -637 kJ
Calculate the enthalpy change when one mole of hydrogen reacts and
2 answers
asked by
cooper
773 views
I want to know the enthalpy change for this reaction which occurs in a blast furnace:
Fe2O3(s) + 3C(s) --> 2Fe(l) + 3CO(g) You
1 answer
asked by
Alice
763 views
Given the following thermochemical equation:
2 SO2 + O2 => 2 SO3 + 4300 kJ What is the heat change in kJ accompanying the
3 answers
asked by
Anonymous
738 views
How much heat (in kilojoules) is evolved or absorbed in the reaction of 3.35 of with enough carbon monoxide to produce iron
2 answers
asked by
LaK
732 views
A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Two metallic
3 answers
asked by
Kelsey
738 views
Calculate the chage in enthalpy produced by dissolving 14.3 g NaOH in 65.0 g of water if the temperature increases 49.1 C and
2 answers
asked by
so
741 views
When 22.3 mL of 1.00 M AgNO3 is mixed with 21.7 mL of 1.50 M NaCl, the temperature of the mixture rises for 21.6 degrees C to
4 answers
asked by
Sarah
715 views
The dH for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surroundings when 12.0 g of CO (g) reacts
2 answers
asked by
tank
694 views
calculate the heat of formation of methane given the heat of combustion of C,H2 and CH4 as-393,-285 and -887kj per mol
2 answers
asked by
halima
703 views
If you burn 13.7 g of methane (CH4) burns in oxygen, then 686 kJ is evolved. What is the amount of heat produced per mole of
4 answers
asked by
danny
695 views
How do I find the molar enthalpy H (kJ/mol) for reaction of NH3 + HCl -> NH4Cl at temp 9.8 celsius by using Hess's Law. I do not
1 answer
asked by
Natalie
693 views
When 24.0 cal of heat is added to 18.5 g of aluminum at 19.0 ∘C, what is the final temperature of the aluminum?
2 answers
asked by
Christina
694 views
Use standard enthalpies of formation to calculate the heat produced by the combustion of one mole of ethanol by the following
2 answers
asked by
Anonymous
693 views
What is the change in enthalpy when 4.00 mol of sulfer trixoide decomposes to sulfer dioxide and oxygen gas?
2SO2 + O2 ---> 2SO3
2 answers
asked by
Jessica
674 views
I have this question in front of me concerning Methanol (CH3OH) & how geseous methanol is formed via the following
1 answer
asked by
Travis
674 views
Use the following information to find Hf of butanol [C4H9OH(l)].
C4H9OH(l) + 6 O2(g) 4 CO2(g) + 5 H2O(g) Hcomb = -2712.9 Hf of
2 answers
asked by
mara
679 views
A handbook gives the heat of combustion of liquid carbon disulfide as -3.42 kcal/g of the liquid. Write the equation
2 answers
asked by
Anonymous
665 views
I know I posted this question before, but can you clarify it??
MY QUESTION IS AFTER YOU SWITCHED THE DELTA H1 THE CHANGE IN THE
2 answers
asked by
Anonymous
664 views
GIVE ENTHALPY PROFILE DIAGRAMS TO ILLUSTRATE ENDOTHERMIC AND EXOTHERMIC REACTIONS.INCLUDE AN EXPLANATION OF CONCEPTS SUCH AS
3 answers
asked by
ABRAHAM
670 views
A 100.0 mL sample of 0.300 M Ca(OH)2 is mixed with 100.0 mL of 0.700 M H3PO4 in a coffee cup calorimeter.If both solutions were
3 answers
asked by
jenna
636 views
The enthalpy of solution is the amount of energy absorbed or released when a solute is dissolved in a solvent. Suppose a 650 g
2 answers
asked by
Bobby
625 views
I would really appreciate some help with this thermochemistry problem! I'm really confused as to why I keep getting the wrong
2 answers
asked by
DC
645 views
In a calorimetry experiment, 2.14 g of NH4Cl is dissolved in 100.0 mL of water. The temperature drops by 1.43°C. Calculate the
1 answer
asked by
Anonymous
630 views
CHCl3 has normal boiling point at 61C and enthalpy of vaporization of 29.24kJ/mol. what are its value of G and S vapor
1 answer
asked by
Anonymous
620 views
A student mixes two aqueous solutions, whose masses are 30.0 g and 35.0 g, together. Each solution is initially at a temperature
2 answers
asked by
bob
591 views
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Parent Categories (9)
Acids and Bases
Chemical Reactions
Chemistry
Chemistry Knowledge
Physical Chemistry
Physics
Reactions and Energy
Stoichiometry
Thermodynamics