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Enthalpy
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Questions (315)
Calculate the number of kJ released for the reaction shown below, if you begin with 52 grams of fluorine (F2), and the ΔH =
4 answers
asked by
lala
1,148 views
why do we use the limiting reactant data to calculate delta h?
why might it be important to know delta h prior to running a
4 answers
asked by
Jessica
3,121 views
What mass of ammonia is necessary to produce 500 kJ of heat?
4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g) ΔrH = -906 kJ mol-1
4 answers
asked by
Anonymous
1,312 views
Energy, q, w, Enthalpy, and StoichiometrySource(s):
Consider the combustion of liquid methanol, CH3OH (l). CH3OH (l) +3/2O2 (g) =
9 answers
asked by
Lisa
3,801 views
Sucrose, C12H22O11, is table sugar, and it has a ∆Hc of –5639.7 kJ/mol. Determine the ∆Hf of sucrose given
∆Hf (H2O(l)) =
4 answers
asked by
Dua
1,006 views
Consider the combustion of nitrogen monoxide:
NO(g) + ½ O2(g) NO2 (g) ΔH = -56.5 kJ/mol How much heat would be released by the
4 answers
asked by
Anna
980 views
Calculate the Molar Enthalpy of Neutralization (ΔHn) in kJ/mol of the reaction between a monoprotic acid and a monoprotic base,
4 answers
asked by
Ashley
2,419 views
The enthalpy change in the combustion of the hydrocarbon octane is delta H = -5.48 x 10^3 kJ/mol C8H18 (l). How much heat, in
6 answers
asked by
Jackie D
3,873 views
what is the molar change in enthalpy when 100 g of ice is heated from -18.2C to -7.2C?(C=37.4 J/K*mol)
4 answers
asked by
any
1,635 views
In a constant-pressure calorimeter, 65.0 mL of 0.320 M Ba(OH)2 was added to 65.0 mL of 0.640 M HCl. The reaction caused the
4 answers
asked by
Bart
3,678 views
When 1mol of a gas burns at constant pressure, it produces 2430J of heat and does 5kJ of work.
Calculate change in H, q, and in
5 answers
asked by
Vanessa Ozuna
3,980 views
Calculate the enthalpy change for the reaction: Zn (s) + S (s) + 2 O2 (g) → ZnSO4 (s) ΔH = ? kJ by using the following data:
Z
4 answers
asked by
Jack
3,468 views
Determine how much heat (in kilojoules) is evolved or absorbed in the reaction of 1.05 g of Na with H2O:
2Na(s)+2H2O(l)
4 answers
asked by
Jay
2,468 views
Reaction 1: NaOH + HCL --> H20 + NaCl delta H of -100.332 kj/mol
Reaction 2: NaOH + NH4Cl --> NH3 + H20 : delta H of 358.639
4 answers
asked by
Serena
5,311 views
Given that:
H2 (g) + F2 (g) ---> 2HF (g) H(rxn)= -546.6 kJ 2H2 (g) + O2 (g) ---> 2H2O (l) H (rxn)= -571.6 kJ calculate the value
4 answers
asked by
Chelsea
2,348 views
Find the value of delta H net for the following equation:
SnBr2(s) + TiCl4(l) -> TiBr2(s) + SnCl4(l) Use the following reactions
4 answers
asked by
Hannah
3,288 views
Determine the delta H for the following reaction
C3H4(g) + 2H2(g) --> C3H8(g)
4 answers
asked by
belle
2,417 views
So Ag+ + Cl- ---> AgCl and delta H is -65.5 kJ. I'm supposed to calculate delta H when one mole of AgCl dissolved in water, so 1
4 answers
asked by
Victor
1,763 views
A 6.3 g sample of solid NH4NO3 is dissolved in 50g of water, causing the temperature to drop from 24°C to 19°C. Calculate the
4 answers
asked by
Gennelle
2,055 views
What is the change of enthalpy associated with the combustion of one mole of pentane?
C5H12 + 8O2 �¨ 5CO2 + 6H2O I'm very
3 answers
asked by
Sara
2,512 views
Ethanol, C2H5OH, is being promoted as a clean fuel and is used as an additive in many gasoline
mixtures. Calculate the ΔH°rxn
4 answers
asked by
Anonymous
1,799 views
The enthalpy formation of ethanol, C2H5OH, is -277.0 kJ/mol @ 298.15 K. Calculate the enthalpy of combustion of one mole of
4 answers
asked by
Morgan
2,822 views
the standard entalpy of combustion of ethene gas C2h4 IS -1411.1 KJ/mol at SATP. Calculate Hf for ethene gas.
my work so far:
3 answers
asked by
Joce
1,786 views
consider the following reaction:
2CH3OH(g) yields 2CH4(g) + O2(g) change in enthalpy= 252.8kJ How many kilojoules of heat are
4 answers
asked by
Dylan
3,286 views
Data:
2Ba(s) + O2(g) ¡æ 2BaO(s) ∆H¡Æ = -1107.0 KJ Ba(s) + CO2(g) + ¨ö O2(g) ¡æ BaCO3(s) ∆H¡Æ = -822.5 KJ Given the
4 answers
asked by
lavonne
1,563 views
Enthalpy questions?
Given this enthalpy change MgCl₂(s)---->Mg²⁺(g) +2Cl⁻(g) ΔH∅ =+2490KJ/mol Mg2+(g)----> Mg²⁻ (aq)
4 answers
asked by
Arvind Vijayanand Dubey
1,247 views
When you add 0.567 g of sodium metal to an excess of hydrochloric acid, you find that 5890 J of heat are produced. What is the
5 answers
asked by
lex
920 views
Use standard enthalpies of formation to calculate ΔHrxn° for each reaction. (See the appendix. Enter your answer to the tenth
7 answers
asked by
DeeDee
7,119 views
Please show me how to work!
Ethane, C2H6(g) can be made by reaction of hydrogen gas with acetylene, C2H2(g). the standard
3 answers
asked by
Sam
1,173 views
A .25 g chunk of sodium metal is cautiously dropped into a mixture of 50g of water and 50 g of ice both at 0 C
2Na(s) + 2h2o(l)
6 answers
asked by
Adriths
3,056 views
How much energy is evolved during the formation of 98.7 g of Fe, according to the reaction below?
Fe2O3(s) + 2 Al(s) → Al2O3(s)
4 answers
asked by
mauds
4,736 views
The standard enthalpy of formation of H2O (l) is -285.8 kJ/mol. Calculate ∆E° for the following
reaction. H2O (l) → H2 (g) +
3 answers
asked by
Mahnoor
1,231 views
Assume that no heat is lost to the surroundings and calculate the enthalpy involved when 200. mL of .10 M potassium hydroxide
3 answers
asked by
Devon
1,230 views
A sample of 2.08 grams of Z is dissolved into
500 grams of water which is in a styrofoam coffee cup. The temperature is
3 answers
asked by
John
687 views
Select the delta H values associated with the dissolution of lithium chloride that are exothermic.
delta H1: energy associated
3 answers
asked by
Anonymous
1,789 views
C2H5O2N is an important compound. The combustion reaction of glycine proceeds according to this equation:
4C2H5O2N + 9O2 --->
4 answers
asked by
Izzie
911 views
Calculate the ∆H°rxn for the combustion of methane using the given ∆H°f.
CH4 (g) + 2 O2 (g) → CO2 (g) + 2H2O (g) ∆H°f,
2 answers
asked by
christine
117 views
A 5.00-g sample of KBr at 25.0 C dissolves in 25.0 mL of water also at 25.0 C. The final equilibrium temperature of the
4 answers
asked by
Dalal
1,386 views
The value of ΔH° for the reaction below is -1107 kJ:
2Ba (s) + O2 (g) → 2BaO (s) How many kJ of heat are released when 5.75 g
3 answers
asked by
jean
3,793 views
The reaction through which carbon changes from graphite to diamond form is represented by the equation
C(graphite) --->
3 answers
asked by
Rose
1,355 views
The value of ΔH° for the reaction below is -1107 kJ:
2Ba (s) + O2(g) → 2BaO (s) How many kJ of heat are released when 5.75 g
3 answers
asked by
Anonymous
1,397 views
Given the following thermochemical equation:
NO2 (g) + O2 (g) → NO (g) + O3 (g) ΔH = - 212 kJ Which has more enthalpy, the
3 answers
asked by
Ann
893 views
Sn (s) + 2Cl2(g) --> SnCl4(l).Sn(s) + Cl2(g) --> Sn Cl2(l) DH = -186.2 kJSnCl2(s) + Cl2(g) --> SnCl4(l) DH = -325.1 kJWhat is
3 answers
asked by
Sammantha
2,155 views
calculate the delta Hf of c6h12o6 (s) from the following data:
Delta H combustion= -2816 kj/mol delta Hf of Co2 = -393.5 kj/mol
3 answers
asked by
Cece
1,017 views
I'm trying to calculate the enthalpy of the reaction
Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2 (g) however I cannot find the enthalpy of
3 answers
asked by
Kirstie
2,175 views
Calculation of )Hf0 for Mg2+(aq.)
1. Assume the heat capacity of the final solution is 3.92 J K-1 g-1. Using the mass of the HCl
3 answers
asked by
Narash
978 views
A student performs an experiment to determine the enthalpy of neutralization of hydrochloric acid and sodium hydroxide. The
3 answers
asked by
Rachel
1,100 views
Which of the following constants are needed to calculate the change in enthalpy (�H) for heating a sample of liquid water at 10C
5 answers
asked by
Bob
1,015 views
What is the enthalpy for the following reaction?
C2H4+H2O--->C2H5OH
4 answers
asked by
Kay
2,476 views
For each problem, find the ΔH for the target reaction below, given the following step reactions and subsequent ΔH values:
Targe
3 answers
asked by
Carmen
101 views
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Parent Categories (15)
Chemical Bonding
Chemical Equations
Chemical Reactions
Chemical Reactions/Thermodynamics
Chemistry
Combustion Reactions
Energy
Heat Transfer
Organic Chemistry
Physical Chemistry
Reaction
Reactions
Stoichiometry
Thermochemistry
Thermodynamics