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
Ivanshal [37]
3 years ago
6

If you need to reverse the following reaction in order for it to be an intermediate reaction in a Hess's law problem, what would

be the final value for the enthalpy of reaction you use for this intermediate reaction? H2 + 0.5 O2 H2O, H = -286 kJ
Chemistry
2 answers:
Olin [163]3 years ago
4 0
When reversing a given reaction, we simply change the sign of the standard enthalpy change value. Therefore, the reaction will become:
H₂O → H₂ + 0.5O₂, ΔH = 286kJ
This is because if a certain amount of energy is released when a reaction occurs, the same amount of energy must be supplied for the reaction to occur in the reverse direction.
castortr0y [4]3 years ago
3 0

Answer:

<u>286 KJ</u> is the answer

Explanation:

You might be interested in
At 25.5°C a gas has a volume of 125mL. What would be the volume be if the temperature increased to 50°C
kolezko [41]

Answer:

245 mL

Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

7 0
3 years ago
What is the bond energy required to break one mole of carbon-carbon bonds​
ArbitrLikvidat [17]

Answer:

<h2><u><em>100 kcal of bond energy</em></u></h2>

<u><em></em></u>

8 0
3 years ago
In liquids, the attractive intermolecular forces are ________. In liquids, the attractive intermolecular forces are ________. st
Fantom [35]

Answer:

strong enough to hold molecules relatively close together but not strong enough to keep molecules from moving past each other.

Explanation:

In liquids, the attractive intermolecular forces are <u>strong enough to hold molecules relatively close together but not strong enough to keep molecules from moving past each other</u>.

Intermolecular forces are the forces of repulsion or attraction.

Intermolecular forces lie between atoms, molecules, or ions. Intramolecular forces are strong in comparison to these forces.

<u />

5 0
2 years ago
6. A quiet sound exerts a pressure of 4.00 x 10^-8 kPa (kPa= kilopascals, a pressure unit). What is this pressure measured in at
Radda [10]

Answer:

GOOGLE MY HUMAN

Explanation:

GOOGLE!!!!!

3 0
2 years ago
Calculate the volume of a 1.25 M solution of HCN made from 31 grams of HCN
fenix001 [56]

Answer:

V HCNsln = 0.9176 L

Explanation:

V HCNsln = ?

∴ m HCN = 31 g

∴ <em>C</em> HCNsln = 1.25 mol/L

∴ molar mass HCN = 27.0253 g/mol

⇒ V HCNsln = (31 g)*(mol/27.0253 g)*(L/1.25 mol) = 0.9176 Lsln

5 0
3 years ago
Other questions:
  • Which element could provide one atom to make an ionic bond with fluorine? (Hydrogen will not make ionic bonds easily, so do not
    8·1 answer
  • Determine the concentrations of K2SO4, K+, and SO42− in a solution prepared by dissolving 2.07 × 10−4 g K2SO4 in 2.50 L of water
    5·1 answer
  • 4. Each time that you prepare a diluted bleach solution you will want it to have a [OH-] = 0.02. Calculate how much 1.00 M NaOH
    12·1 answer
  • The table above shows data collected on five apples while doing field research outside the laboratory. What type of lab equipmen
    12·2 answers
  • To calculate changes in concentration for a system not at equilibrium, the first step is to determine the direction the reaction
    11·1 answer
  • What is the mass of 19.5g
    14·1 answer
  • A hydrate of CoCl2 with a mass of 6.00g is heated strongly. After cooling, the mass of the anhydrate is 3.27g.
    12·1 answer
  • Identify the number of elements and the number of atoms present in the chemical formula.
    11·1 answer
  • What is the voltage for the following cell: Cu(s)| Cu+(aq) || Mg2+(aq) |Mg(s)?
    5·1 answer
  • How many kilojoules of heat energy are absorbed when 98.5 g of water are heated from 24.5 oC to 48.8 oC?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!