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Thermochemistry
Page 7
Questions (383)
A 0.50 {\rm g} sample of vegetable oil is placed in a calorimeter. When the sample is burned, 18.9 {\rm kJ} are given off.
1 answer
asked by
Andrea
599 views
Hi, I am doing a practice test for my chemistry final and I do not understand one of the answer they gave for this
3 answers
asked by
Matilda
604 views
From the following Information, calculate the standard change of enthalpy for the combustion of coal. SHOW WORK AND BALANCED
2 answers
asked by
Chloe
606 views
A 2.75 g sample of the hydrocarbon acetone, CH3COCH3, is burned in a bomb calorimeter with 975 mL of water, initially at 23.50
2 answers
asked by
Jake
600 views
I have previously posted this question, but now I am lost
question: A calorimeter is filled with 10.0 millimole (mmole) of
5 answers
asked by
Liz
596 views
I got 0.907 KJ for ΔHcomb but I don't know if its correct. I also don't know how to write the equation.
-------- question: A
3 answers
asked by
Liz
601 views
what is the delta H of N2 + 3H2 ---> 2NH3 + 22,000 cal
2 answers
asked by
Mandy
580 views
there's a 5.44 g sample of NH4NO3 and 150 g sample of water. So they ask for the change in enthalpy in kJ/mol. They give the
2 answers
asked by
anna
585 views
Consider the following problem:
Target: 2NOCl(g) ? N2(g)+ O2(g)+Cl2 (g) ?Hrxn= ? Steps: 1. 1/2 N2(g) + 1/2 O2(g)? NO(g) ?H= 90.3
2 answers
asked by
Anna
576 views
2CH3OH(l)+3O2(g)-->2CO2(g)+4H20 +1350 kj
1. What mass of water could be heated from 20.0 C to 35 C,by burning 48g of methanol?
2 answers
asked by
micheal
568 views
I need to do this question but um unable to draw the enthalpy cycle please help me.
The standard enthalpy of combustion of
2 answers
asked by
isu
580 views
Suppose 150.0 mL of 0.50 M HCl and 150.0 mL of 0.50 M NaOH, both initially at 24.0°C, are mixed in a thermos flask. When the
2 answers
asked by
andrea
581 views
Use Hess's Law and a table of heats of formation to determine the enthalpy for the following reaction.
3SO2(g) + 3H2O(g) +
2 answers
asked by
korko
566 views
Hii i was wondering if u cud help me solve this problem..im not sure how to start it.
Calculate the delta H for the reaction of
5 answers
asked by
Anmol
584 views
please assist me with this themochemistry question
Given the following data CaCO3 (s)>>>>>>CaO (s) + CO2(g) (g) Delta H = -178.1
3 answers
asked by
Yevette
589 views
In an aluminum calorimeter, 25.00 g of I2 was burned in excess H2 to form HI. From the data below, establish the molar heat of
2 answers
asked by
Anonymous
558 views
The reaction between potassium metal and chlorine gas is described by the following thermochemical equation K(s) + ½C_l2(g) =
2 answers
asked by
trigger
566 views
I have a test on the general concepts of thermochemistry tomorrow.
how should i study for it since its not based on problem
3 answers
asked by
Nick
578 views
In a constant-pressure calorimeter, 75.0 mL of 0.810 M H2SO4 was added to 75.0 mL of 0.390 M NaOH. The reaction caused the
2 answers
asked by
KTM
570 views
If the heat of combustion for a specific compound is -1250.0 kJ/mol and its molar mass is 35.39 g/mol, how many grams of this
2 answers
asked by
Robert
559 views
how in the world do you do this problem?
Use the thermochemical equations shown below to determine the enthalpy (kJ) for the
2 answers
asked by
anonymous
559 views
Standars enthalpy
Mg(OH)2 + H2SO4 = MgSO4 + 2 H2O
2 answers
asked by
monique
568 views
A 1.35-gram sample of compound X (of MW
88.0 g/mol) was burned in a bomb calorimeter containing 1700 g of water. A temperature
2 answers
asked by
yeah
549 views
when 1.00g of sucrose C12H22O11 was combusted in a calorimeter to give CO1 and H20, the temperature rose from 25.00 to 27.32 C.
3 answers
asked by
joanna
574 views
A constant volume (bomb) calorimeter was calibrated in an analytical laboratory by
burning 1.057g of benzoic acid (C7H6O2) which
2 answers
asked by
Lay
565 views
Find the molar heat of vaporization for a
substance, if 3.28mol of the substance absorbs 24.8 kJ of energy when it changes from a
2 answers
asked by
nelson
539 views
Ok, I really need to know how to work problems like these so could someone please show me how to set it up?! Given this data:
1.
2 answers
asked by
lavonne
537 views
The reaction between 0.055 g of calcium with an excess of water was carried out in an ice calorimeter. The volume of water in
2 answers
asked by
Raj
566 views
What is the lattice energy of NaH? Use the given information below:
Heat of formation for NaH = -56.442 kJ/mol Head of
2 answers
asked by
LatticeEnergy??
564 views
When 100 mL of Ba(NO3)2 solution at 25 degrees Celsius is mixed with 100 mL solution CaSO4 solution at 25 degrees Celsius in
2 answers
asked by
Megan
549 views
You mix 5.32 g of solid magnesium sulfate with 105.24 g of water inside a calorimeter. As the magnesium sulfate dissolves, the
3 answers
asked by
Anonymous
542 views
How much heat is required to bring 1.0kg of water from 25 degrees celsius to 99 degrees celsius?
2 answers
asked by
Kayla
517 views
the thermochemical equation for th edissocation of hydrogen gas into atoms may be written :
h2-> 2H delta H 1824.2 what is the
5 answers
asked by
Court
534 views
Calculate the enthalpy change, ΔrH, for the following reaction,
4 NH3 (g) + 5 O2(g) → 4 NO (g) + 6 H2O (g) given the
2 answers
asked by
Ninaya
548 views
The molar enthalpies of combustion of CH3COCOOH(l)CH3COOH(l) and CO(g) are respectively -1275kJ/mol, -875kJ/mol, and -283kJ/mol.
2 answers
asked by
Bobby
533 views
Calculate the amount of heat (in calories) released when the 1.2 g sample was burned.
2 answers
asked by
Joevonie
528 views
Using the heats of formation, determine what the heat of vaporization of water should be.
Heat of formation of water: -248.8
2 answers
asked by
rinchan
525 views
When 1662 J of heat energy is added to 45.9 g of hexane, C6H14, the temperature increases by 16.0 °C. Calculate the molar heat
2 answers
asked by
ashley
509 views
lets just say that 5g of solid benzoic acid burns under gaseous oxygen atmoshphere. Temperature increases from 20c to 50c. So is
3 answers
asked by
eng
521 views
Which fact must be true if a relationship is endothermic?(1 point) Responses More bond energy is absorbed on the reactant side
1 answer
asked anonymously
67 views
Calculate the DHof for the following reaction under standard state conditions:
2 Ag2S(s) + 2 H2O(l) ---> 4 Ag(s) + 2 H2S(g) +
1 answer
asked by
peterson
510 views
Calculate the enthalpy change, ÄH DeltaH, for the process in which 12.7g g of water is converted from liquid at 7.3 ∘ C \,
2 answers
asked by
ntombiningi
496 views
given the following thermochemical equations:
4B(s) + 3O2(g) -> 2B2O3(s) deltaH=-2509.1 kJ 2H2(g) + O2(g) -> 2H2O(l)
2 answers
asked by
Wethu
525 views
Someone said, "Calculate the total delta H of the reaction and subtract the total delta H of the product from it. If you get a
2 answers
asked by
A Canadian
498 views
2 H2O (l) → 2 H2 (g) + O2 (g)
Using the thermodynamic values to calculate accurate values of ΔHr and ΔSr, will the reaction
1 answer
asked by
Melissa
505 views
Calorimeter lab. What is the change in enthalpy for magnesium after the reaction with vinegar?
4 answers
asked by
anonymous
495 views
How would I calculate the heat of solution in Joules for dissolving 0.1 mole of NH4NO3 in 100 mL of water?
The initial
4 answers
asked by
Zach
514 views
topic: thermochemistry
i'm not really sure how to go about his question. i'm not sure with formula to use. (perhaps Cspht= q/(m x
3 answers
asked by
marie
468 views
What is the molar heat of reaction?
When 0.732 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of
7 answers
asked by
Chris
488 views
in our notes for strengths of acids and bases it says that you could add a strong/weak acid with a strong/weak base and it will
2 answers
asked by
will
494 views
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Parent Categories (9)
Acids and Bases
Chemical Reactions
Chemistry
Chemistry Knowledge
Physical Chemistry
Physics
Reactions and Energy
Stoichiometry
Thermodynamics