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
Verizon [17]
2 years ago
13

To change the energy in a substance, you must change what?

Chemistry
1 answer:
Sophie [7]2 years ago
3 0
A.) To change Temperature......
You might be interested in
Do bases lose or gain hydrogen ions?<br><br><br>Help :-)
kodGreya [7K]

Answer:

Acids are classified in the Bronsted Lowry acid-base theory as species, which losses hydrogen ions (H+, known as protons) in a chemical reaction (and are foundation species that accept hydrogen ions).

7 0
3 years ago
The ksp of pbi2 is 1.4 x 10-8. what is the molar solubility of lead(ii iodide in a solution of 0.400 m sodium iodide?
tino4ka555 [31]
The solubility product of a substance us calculated by the product of the concentration of the dissociated ions in the solution raise to the stoichiometric coefficient of the ions. Therefore, we need the dissociation reaction. For this, it will have the reaction:

PbI2 = Pb^2+ + 2I-

We solve as follows:

Ksp = [Pb2+][I-]^2 = <span>1.4 x 10-8
</span><span>1.4 x 10-8 = x(2x)^2
</span><span>1.4 x 10-8 = 4x^3
x = 1.5x10^-3 M

The molar solubility would be </span>1.5x10^-3 M.
8 0
2 years ago
You have a sample of 75.6 g of C3H8. How many moles of C3H8 are in the sample?
dsp73

The number of moles that are contained in the given mass of propane (C_3H_8 is 1.7143 moles.

<u>Given the following data:</u>

  • Mass of propane = 75.6 grams.

<u>Scientific data:</u>

  • The molar mass of propane = 44.1 g/mol.

To calculate the number of moles that are contained in the given mass of propane (C_3H_8):

<h3>How to calculate the moles of a compound.</h3>

In this exercise, you're required to determine the number of moles of propane that are contained in the given sample:

Mathematically, the number of moles contained in a chemical compound is given by this formula:

Number\;of\;moles = \frac{mass}{molar\;mass}

Substituting the given parameters into the formula, we have;

Number\;of\;moles = \frac{75.6}{44.1}

Number of moles = 1.7143 moles.

Read more on number of moles here: brainly.com/question/3173452

3 0
2 years ago
If chlorine gas is bubbles through an aqueous solution of sodium iodide,the result is elemental iodine and aqueous sodium chlori
Mrac [35]
The balanced reaction that describes the reaction of chlorine gas and sodium iodide to produce elemental iodine and sodium chloride in aqueous solution is expressed Cl2+2NaI= I2 + 2NaCl. This kind of reaction is called single replacement reaction where the anion, in this case, is only replaced
3 0
3 years ago
Under the same conditions of temperature and pressure a liquid differs from a gas because the particles of the liquid
noname [10]

Answer:

liquid has more attraction between molecules. It takes energy to break these forces to change the liquid to a gas.

Explanation:

because liquid has more attraction

6 0
3 years ago
Read 2 more answers
Other questions:
  • What type of reaction does this equation represent? 2I4O9(s) → 4I2(s) + 9O2(g)
    11·2 answers
  • Computer model that usually shows a process is called
    6·1 answer
  • How many hydrogen atoms are attached to each carbon adjacent to a double bond?
    13·1 answer
  • Why was Einstein named after Einsteinium <br><br> This is worth 15 points <br><br> Please help.
    6·1 answer
  • What is the name of CaCl2 7H2o
    11·1 answer
  • When does the object change direction?
    11·1 answer
  • Calculate the mass of chromium produced from 50g of Cr2O3.
    10·1 answer
  • What is molarity? .​
    13·1 answer
  • Which statement describes an important role of carbon dioxide in Earth’s atmosphere? *
    9·2 answers
  • 7. Allicin, C6H65,0, is the compound that gives garlic its odor. A sample of allicin contains 3.0 X 1021 atoms of carbon. How ma
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!