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
Alika [10]
2 years ago
14

What does the difference in potential energy between the reactants and products represent? A. It represents the energy required

to make the reaction happen. B. It represents the change in enthalpy for the reaction. C. It represents the changes in kinetic energy occurring in the reaction. D. It represents the energy used to form the products from elements.
Chemistry
1 answer:
Scrat [10]2 years ago
6 0

Answer:

B. It represents the change in enthalpy for the reaction.

Explanation:

The potential energy diagram for a chemical reaction shows its potential energy plotted against the reaction progress coordinate. The potential energy diagram shows how the potential energy of reactants and products vary as reactants are converted into products.

The potential energy of the system refers to energy stored in the chemical bonds of reactants and products. The difference between the potential energy of reactants and products is known as the enthalpy of reaction. This difference in potential energy may be positive or negative. A positive difference in potential energy implies an endothermic reaction while a negative difference in potential energy implies an exothermic reaction.

You might be interested in
I need help click the image please help
Viefleur [7K]

Answer:

Answer:

a plant cell

Explanation:

because the chrolopast is green

Explanation:

6 0
2 years ago
How many grams of sucrose (c12h22o11) are in 1.55 l of 0.758 m sucrose solution? express your answer in grams to three significa
satela [25.4K]
The molecular formula of sucrose is - C₁₂H₂₂O₁₁
molecular mass of sucrose - 342 g/mol
molarity of sucrose solution is 0.758 M
In 1 L solution the number of sucrose moles are - 0.758 mol
Therefore in 1.55 L solution, sucrose moles are - 0.758 mol/L x 1.55 L
                                                                           = 1.17 mol
The mass of 1.17 mol of sucrose is - 1.17 mol x 342 g/mol = 4.00 x 10² g

7 0
2 years ago
Read 2 more answers
How many milliliters of a 3.4 M NaCl solution would be needed to prepare each solution?
Ksenya-84 [330]

Answer:

a. Approximately 1.3\; \rm mL.

b. Approximately 7.2\; \rm mL.

Explanation:

The unit of concentration "\rm M" is equivalent to "\rm mol \cdot L^{-1}", which means "moles per liter."

However, the volume of both solutions were given in mililiters \rm mL. Convert these volumes to liters:

\displaystyle 45\; \rm mL = 45\; \rm mL \times \frac{1\; \rm L}{1000\; \rm mL} = 0.045\; \rm L.

\displaystyle 330\; \rm mL = 330\; \rm mL \times \frac{1\; \rm L}{1000\; \rm mL} = 0.330\; \rm L.

In a solution of volume V where the concentration of a solute is c, there would be c \cdot V (moles of) formula units of this solute.

Calculate the number of moles of \rm NaCl formula units in each of the two solutions:

Solution in a.:

n = c \cdot V = 0.045\; \rm L \times 0.10\; \rm mol \cdot L^{-1} = 0.0045\; \rm mol.

Solution in b.:

n = c \cdot V = 0.330\; \rm L \times 0.074\; \rm mol \cdot L^{-1} = 0.02442\; \rm mol.

What volume of that 3.4\; \rm M (same as 3.4 \; \rm mol \cdot L^{-1}) \rm NaCl solution would contain that many

For the solution in a.:

\displaystyle V = \frac{n}{c} = \frac{0.0045\; \rm mol}{3.4\; \rm mol \cdot L^{-1}} \approx 0.0013\; \rm L.

Convert the unit of that volume to milliliters:

\displaystyle 0.0013\; \rm L = 0.0013\; \rm L \times \frac{1000\; \rm mL}{1\; \rm L} = 1.3\; \rm mL.

Similarly, for the solution in b.:

\displaystyle V = \frac{n}{c} = \frac{0.02442\; \rm mol}{3.4\; \rm mol \cdot L^{-1}} \approx 0.0072\; \rm L.

Convert the unit of that volume to milliliters:

\displaystyle 0.0072\; \rm L = 0.0072\; \rm L \times \frac{1000\; \rm mL}{1\; \rm L} = 7.2\; \rm mL.

8 0
2 years ago
Give me number of significant figures in the number 40
dangina [55]

1 significant figure, because there is no decimal after the zero the zero doesn't count.

5 0
3 years ago
Which order is correct in listing the bond lengths from shortest to longest? A. single, double, triple B. triple, double, single
Alex787 [66]
A I believe would be the answer
3 0
3 years ago
Other questions:
  • Nitrogen dioxide, a major air pollutant, can be produced by the combustion of nitrogen oxide as shown.
    9·2 answers
  • Which statement best describes the general relationship between stream velocity and the size of the sediment particles transport
    6·1 answer
  • Onsider this representation of an original DNA sequence: THE TALL MAN WAS SAD.
    7·2 answers
  • 1) What is the formula for calculating weight
    15·1 answer
  • 7. A sound wave travels 500m in 60 seconds. Calculate the speed of the sound?
    12·1 answer
  • What type of alloy will C and Fe form?
    9·1 answer
  • If there is 3% freshwater available on earth, approximately what percentage of it is in ice?
    6·2 answers
  • 2. What states of matter exist within the human body? What state of matter do you think your body is mostly made up of? Why? (4
    6·1 answer
  • An ion has 56 protons, 54 electrons, and 81 neutrons. What is its atomic number ?
    9·2 answers
  • In a reaction to make ethyl acetate, 25.5 g CH3COOH react with 11.5 g C2H5OH to give a yield of 17.6 g CH3COOC2H5-
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!