1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anna007 [38]
3 years ago
5

If coefficients of a balanced equation are doubled the enthalpy change for reaction is

Chemistry
1 answer:
BlackZzzverrR [31]3 years ago
5 0

Answer:

Explanation

ΔH is directly proportional to the quantity of a substance that reacts or is produced by a reaction. Enthalpy is directly proportional to mass. Therefore, if you double the coefficients in an equation, then the value of ΔH is multiplied by two.

You might be interested in
What does Q=mcdeltaT stand for ?
AVprozaik [17]
Its a formula relating to specific heat capacity

Δθ refers to the change in temperature

Q refers to the energy neededto raise the temperature of an object by the change in temperature

m stands for the mass of tje object

c is the specific heat capacity which is the amount of energy needed to heat up an object per unit mass
4 0
3 years ago
Calculate the enthalpy of the formation of butane, C4H10, using the balanced chemical equation and the standard value below:
zavuch27 [327]

Answer:

+125.4 KJmol-1

Explanation:

∆H C4H10(g) = -2877.6kJ/mol

∆H C(s)=-393.5kJ/mol

∆H H2(g) = -285.8

∆H reaction= ∆Hproducts - ∆H reactants

∆H reaction= (-2877.6kJ/mol) - [4(-393.5kJ/mol) +5(-285.8)]

∆H reaction= +125.4 KJmol-1

6 0
3 years ago
What is the volume if 1.5 mol of gas has a pressure of 700 torr at 15°C?
Tasya [4]

Answer:

V = 38.48 L

Explanation:

Given that,

No. of moles = 1.5 mol

Pressure, P = 700 torr

Temperature, T = 15°C = 288 K

We need to find the volume of the gas. The ideal gas equation is given by :

PV=nRT\\\\V=\dfrac{nRT}{P}\\\\V=\dfrac{1.5\times 62.36\times 288}{700}\\\\V=38.48\ L, R = L.Torr.K⁻¹.mol⁻¹

So, the required volume is equal to 38.48 L.

7 0
3 years ago
What is the number of molecules of c2h5oh in a 3m solution that contains 4.00kg h2o?
Veronika [31]
 The number  of C2H5OH  in a 3 m solution that contain 4.00kg H2O is calculate as below

M = moles of the solute/Kg  of water

that is 3M = moles of solute/ 4 Kg
multiply  both side by  4

moles of the  solute  is therefore = 12  moles

by use of Avogadro law constant

1 mole =6.02 x10^23  molecules

what  about 12 moles

=12 moles/1 moles  x 6.02 x10^23 = 7.224 x10^24 molecules
3 0
3 years ago
Which of the following are functions of the nose?
MArishka [77]

Answer:

The answer should be I and III

3 0
2 years ago
Read 2 more answers
Other questions:
  • How many moles of Au2S3 is required to form 56 grams of H2S at STP?
    8·1 answer
  • Referring back to question 6 above, in the TLC plate on the left the mobile solvent phase was ethyl acetate, in the plate on the
    14·1 answer
  • What are some examples of how electrolysis is used in scientific research ?
    8·1 answer
  • Take a look at this dandelion. The yellow flower on the right is _______ pollinated and the seeds on the left are transported by
    15·2 answers
  • A gas that occupies 50.0 liters has its volume increased to 68 liters when the pressure was changed to 3.0 ATM. What was the ori
    15·1 answer
  • Adaptation: Question 1 Which best explains why a population of a certain species of moose , over five generations , developed fe
    12·1 answer
  • Explain what the purpose of a gene is!!!!<br><br> *20*
    13·2 answers
  • Describe how you would make 6.0 L of a 0.100 M KCl solution from a 4.0 M stock KCl solution.
    15·1 answer
  • Hello! could anyone help me? i don't really understand. Thank you!! ​
    14·1 answer
  • Why is there a discrepancy between a heat of reaction ob-tained from calorimetry and one obtained from bond energies?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!