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Heat of reaction
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Questions (142)
if known h2 + br2 produce delta h 2hbr totaled 11.2 -72 then to decipher hbr gas into H2 and br2 as much heat is required?
1 answer
asked by
febhie
430 views
During an experiment, a student adds 1.23 g of CaO to 200.0 mL of 0.500 M HCl. The student observes a temperature increase of
4 answers
asked by
imstupid
863 views
how to calculate the heat (kJ) released to thesurroundings when a 23.0 g of HCL if formed, from a CH4 + Cl2=CHCl3+3HCL
4 answers
asked by
alex
2,774 views
Compute the amount of heat released (absolute value) when 1.1 kg of liquid ethanol is burned in excess oxygen to make carbon
2 answers
asked by
Randolph
589 views
How much heat is required to decompose 25.5 grams of NaHCO3? 2NaHCO3(s) + 129 kJ 2Na2CO3(s) + H2O(g) + CO2(g)
5 answers
asked by
jane doe
1,616 views
Determine ΔSuniv in J/K at a temperature of 272 K given ΔHrxn = 77 kJ and ΔSrxn = 162 J/K.
1 answer
asked by
Ryan
484 views
When a 4.00g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of 2.908 kJ x K^-1, the
4 answers
asked by
Jordan
2,067 views
When 0.671 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 109C is observed.
Assume the
1 answer
asked by
Shawn
389 views
Using the following equation
Ca(s) + 2C(s) --> CaC2(s) ^ H = -62.8 kJ CO2(g) --> C(s) + O2(g) ^ H = 393.5 kJ CaCO3(s) + CO2 (g)
2 answers
asked by
Gabrielle
655 views
What is the heat of reaction when 4 moles of carbon monnozide are buened in oxygen?
1 answer
asked by
Anonymous
354 views
Calculate the heat released when 4 L Cl2 with a density of 2.46 g/L at 25 degrees C reacts with an excess of sodium to form
3 answers
asked by
Akira
603 views
When 0.678 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 11.0C is observed.
Assume the
7 answers
asked by
Libit
463 views
When 0.678 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 11.0C is observed.
Assume the
1 answer
asked by
Libit
383 views
When 0.917 g of CaO is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 3.76C is observed.
Assume the solution's
4 answers
asked by
Alex Le
379 views
When 0.969 g of CaO is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 397C is observed.
Assume the solution's
1 answer
asked by
tweety
368 views
The total volume of hydrogen gas needed to fill the Hidenbrug was 2.0e8 L at 1.0 atm and 25 degrees Celsius. How much heat was
1 answer
asked by
Jayd
475 views
Calculate the heat of reaction for the incomplete combustion of 67.0g propane producing carbon monoxide gas and water vapour.
how
1 answer
asked by
Chem
669 views
When 0.633 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 103C is observed.
Assume the
1 answer
asked by
alexis
378 views
How much heat is absorbed/released when 35.00 g of NH3(g) reacts in the presence of excess O2(g) to produce NO(g) and H2O(l)
7 answers
asked by
Daqa
4,837 views
In the reaction between formic acid (HCHO2) and sodium hydroxide, water and sodium formate (NaCHO2) are formed. To determine the
4 answers
asked by
timmy
3,750 views
Nitric acid, HNO3, was first prepared 1200 years ago by heating naturally occurring sodium nitrate (called saltpeter) with
4 answers
asked by
shahreen
1,980 views
When 0.0500 moles of HCL is reacted with 0.0500 moles of NaOH in 50.0 mL of water, the temperature of the water increases by
3 answers
asked by
Kyle
1,501 views
How much heat (in {kJ}) evolves when 7.0L of C2H2(d = 1.0967kg/m^3) is mixed with a stoichiometric amount of oxygen gas? The
3 answers
asked by
Chironjit
1,454 views
SiH4(g) + 2 F2(g) SiF4(g) + 4 HF(g)
If 18.9 kJ are released when 1.10 g of F2 reacts with an excess of SiH4, what is the heat of
2 answers
asked by
jasmine
1,297 views
Calculate the ΔHrxn for the following reactions using the heats of formation given in the table at the end of this assignment:
a
2 answers
asked by
Abby K.
1,300 views
Consider the reaction:P4 (s)+ 6 Cl2 (g) = 4PCl3(g)
Delt H = -1230 kJ How much heat is released when 52.5 of Cl2 (g) reacts with
4 answers
asked by
FS
1,278 views
Why these answers are so?
1- For this reaction 2H2 + O2 = 2H2O a- dela H=delta Hf b-delta Hc= delta Hf c- delta H= delta Hc d-
1 answer
asked by
Omed
1,258 views
1. Calculate the heat (calories) produced by the solution of 3.75 g of NaOH
Hint: Remember that the reaction is exothermic. 2.
1 answer
asked by
Maria
1,254 views
The specific heat of a solution is X J/g*degreesC and its density is Y g/mL. The solution was formed by combining Z mL of
2 answers
asked by
Fred
1,231 views
How much heat is evolved or absorbed in this problem?
Question Details Limestone, CaCo3, when subjected to a temperature of 900
4 answers
asked by
Anonymous
1,181 views
2 HCl (aq) + Ba (OH2) (aq) ----> BaCl2 + 2 H20 (l)
deltaH = -118 kJ Calculate the heat when 100.0 mL of 0.500 M HCl is mixed with
4 answers
asked by
Jake
1,140 views
2 HCl(aq) + Ba(OH)2(aq) BaCl2(aq) + 2 H2O(l)
H = -118 kJ Calculate the heat when 112.4 mL of 0.500 M HCl is mixed with 300.0 mL
10 answers
asked by
mel
1,137 views
When 25.0 ml of 0.500M
HCI is added to 25.0ml of 0.500M KOH in a coffee cup calorimeter at 23.50C, the temperature rises to
2 answers
asked by
newsome
1,035 views
When 0.702 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 114C is observed.
Assume the
7 answers
asked by
Taylor
1,015 views
How much heat will be released when 0.750 moles of carbon monoxide (CO) react in an excess of oxygen gas?
2CO(g) + O2(g) �¨
4 answers
asked by
Summer
997 views
Calculate the energy required to produce 5.00 mol of Cl2O7 on the bases of the following balanced equation. 2Cl2(g) +7O2(g)
2 answers
asked by
Ben
1,003 views
When 32.0 mL of 0.560 M H2SO4 is added to 32.0 mL of 1.12 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises
2 answers
asked by
Megan
987 views
Calculate the heat released when 1.00L of Cl2 (g) with a density of 1.88g/L reacts with an excess of sodium metal at 25 degrees
2 answers
asked by
Emily
946 views
find the heat of reaction deltaT = -95.7KJ
2 Al2 O3(s) > 4Al (s) + 3 O2 (g) a. - 95.7kj b. +95.7kJ c. -47.8 KJ d. +47.8KJ e.
2 answers
asked by
tal
950 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
933 views
How much heat is liberated at constant pressure if .928 g of Fe reacts with 26.2 mL of .238 M HCl? Delta H= -87.9
1 answer
asked by
Anonymous
863 views
When 0.667 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 108C is observed.
Assume the
3 answers
asked by
blasting
898 views
Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars everyday.
1 answer
asked by
patrick
868 views
How much heat (in kilojoules) is released on reaction of 5.30 g of Al?
2 answers
asked by
Donny
871 views
How much heat (in kilojoules) is evolved or absorbed in the reaction of 2.65 g of Na with H2O?
2Na+2H2O ---> 2NaOH + 2H2 Delta H=
4 answers
asked by
Anonymous
874 views
Calculate the heat of reaction (ΔHrxn) for the following reaction:
5O2(g) + 4NH3(g) → 6H2O(g) + 4NO(g)
2 answers
asked by
William
855 views
When a 5.50g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee cup calorimeter, the temperature of
2 answers
asked by
Jennifer
838 views
Answer the following questions based on 2NH3->N2+3H2+450Joules
How much heat is released in the equation: 6NH3->3N2+9H2 What is
2 answers
asked by
JR.
1,214 views
Consider the following equation: CO + 2 H2 → CH3OH △H rxn = -128 kJ
Calculate the amount of heat (in kJ) associated with
1 answer
asked by
katia
776 views
How much heat is evolved or absorbed in this problem?
Question Details Limestone, CaCo3, when subjected to a temperature of 900
2 answers
asked by
Anonymous
774 views
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Parent Categories (14)
Acid-base reactions
Chemical Reactions
Chemistry
Energy and Heat
Energy and Thermodynamics
Energy Calculation
Gas Laws and Stoichiometry
Heat Transfer
Reaction stoichiometry
Reactions
Stoichiometry
Stoichiometry and reactions
Thermochemistry
Thermodynamics