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Heat of reaction
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Questions (143)
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
864 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
2,776 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
486 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
2,068 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
464 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
384 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
369 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
380 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
3,751 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
1,502 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
1,455 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
1,298 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.
1,303 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
1,255 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
1,232 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
1,036 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
999 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
1,004 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
988 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
952 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
935 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
899 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
873 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.
1,215 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 (15)
Acid-base reactions
Chemical Reactions
Chemistry
Energy and Heat
Energy and Reactions
Energy and Thermodynamics
Energy Calculation
Gas Laws and Stoichiometry
Heat Transfer
Reaction stoichiometry
Reactions
Stoichiometry
Stoichiometry and reactions
Thermochemistry
Thermodynamics