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
yarga [219]
3 years ago
12

For a reaction to be nonspontaneous under standard conditions at all temperatures, the signs of δh∘ and δs∘ must be ________ and

________, respectively.
Chemistry
1 answer:
8090 [49]3 years ago
6 0
For a reaction to be nonspontaneous under standard conditions at all temperatures, the signs of ΔH and ΔS must be positive and negative, respectively.
<span>Gibbs free energy (G) determines if reaction will proceed spontaneously.
</span><span>ΔG = ΔH - T·ΔS.</span>
ΔG - changes in Gibbs free energy.<span>
ΔH - changes in enthalpy.
ΔS - changes in entropy.
T is temperature in Kelvins.
When ΔS < 0 (negative entropy change) and ΔH > 0 (endothermic reaction), the process is never spontaneous (<span>ΔG> 0).
</span></span>
You might be interested in
What volume of 12 M HCl solution is needed to make 2.5 L of 1.0 M HCI?
Jlenok [28]

Answer:

0.21 L of 12 M HCL

Explanation:

CV=CV

(12)(x)=(1.0)(2.5)

x=0.21

8 0
3 years ago
What are three reasons that using renewable energy is important.
wariber [46]

Answer:

1. they reduce green house gases

2. they can last a long time and come back pretty much every year and some never run out

3. we have unlimited supply of most if not all renewable resources

Explanation:

hope this helps!

5 0
2 years ago
If you have nitrate and carbon oxygen what can that combine with to make
WARRIOR [948]

Answer: Gunpowder

Explanation:

Gunpowder is made by mixing potassium nitrate with two fuels (atoms that can combine with oxygen atoms and release energy), carbon (charcoal) and sulfur. The oxygen atoms leave the nitrates and move onto the carbon and sulfur atoms, releasing a buttload of energy.

6 0
2 years ago
Read 2 more answers
Analysis of an ore of calcium shows that it contains 13.61 g calcium and 21.77 g oxygen in a 46.28-g sample. Calculate the perce
kondor19780726 [428]

Answer:

29.41% of Calcium and 47.04% of Oxygen

Explanation:

The percent composition of an atom in a molecule is defined as 100 times the ratio between the mass of the atom and the mass of the molecule.

The mass of the molecule of the problem (Ore) is 46.28g. That means the percent composition of Calcium is:

13.61g / 46.28g * 100 = 29.41% of Calcium

And percent composition of Oxygen is:

21.77g / 46.28g * 100 = 47.04% of Oxygen

5 0
3 years ago
Which of the following mixture types is characterized by the settling of particles?
torisob [31]
The answer is B. Suspension. Suspension mixtures are composed of two or more materials mixed together wherein the solute particles are usually larger than those found in a solution or colloid. In cases of solid-fluid suspension mixtures, the solid solute particles tend to settle at the bottom of the mixture after some time.
8 0
3 years ago
Other questions:
  • How many moles is 15.0 grams iron (II) nitrate?
    6·1 answer
  • What is an aspect of the kinetic-molecular theory and can be used to explain the behavior of plasmas?
    7·1 answer
  • How many protons, electrons, and neutrons does the following isotope contain? 79Br+
    7·2 answers
  • All scientific discoveries are made in a<br> laboratory.<br> True<br> False<br> pls helppp
    12·1 answer
  • If iron metal reacts with an aqueous solution of silver nitrate and zinc reacts with an aqueous solution of iron sulfate, rank t
    9·1 answer
  • Why is the Earth's hydrosphere (oceans) made up of mostly hydrogen<br> and oxygen? *
    15·1 answer
  • What is the noble Gas notation for Bromine (Br)?
    14·1 answer
  • Proporties of mixtures
    11·2 answers
  • What is the maximum mass, in kilograms, of (NH4)2U2O7 that can be formed from the reaction of 100 kg of water and 100 kg of ammo
    7·1 answer
  • What's common to H20,HF and NH3​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!