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
Valentin [98]
3 years ago
14

Which statement is true if the Hrxn of a reaction is positive?

Chemistry
2 answers:
erma4kov [3.2K]3 years ago
7 0
I think it is b..................................................
iren2701 [21]3 years ago
3 0

<u>Answer:</u> The correct answer is Option A.

<u>Explanation:</u>

Endothermic reactions are defined as the reactions in which potential energy of the reactants is less than the potential energy of the products. The total enthalpy change of the reaction (\Delta H_{rxn}) comes out to be positive. Energy is absorbed during this reaction.

\Delta H_{rxn}=\Delta H_{products}-\Delta H_{reactants}=+ve

Exothermic reactions are defined as the reactions in which potential energy of the products is less than the potential energy of the reactants. The total enthalpy change of the reaction (\Delta H_{rxn}) comes out to be negative. Energy is released during this reaction.

\Delta H_{rxn}=\Delta H_{products}-\Delta H_{reactants}=-ve

From the above information, the correct answer is Option A.

You might be interested in
In caves, dripping groundwater containing calcium bicarbonate can form stalactites and stalagmites. When the water is exposed to
Pepsi [2]
This is a chemical change because there is a new substance that was created and the new chemical can cause other chemical reaction to happen compared to the 1st state of chemical that was in the cave. Because the cave water was exposed to another environment, the calcium bicarbonate, which is also known as salt. When the cave's groundwater was exposed to a different environment the atom in the cave water rearranged and crystallized.  
7 0
3 years ago
Read 2 more answers
There are approximately 15 milliliters (mL) in 1 tablespoon (tbsp). Which expression can be used to find the approximate number
Helga [31]
You know 1 tbsp is 15 milliliters so you would multiply 15 and 3 together. 15 x 3 =45
So there are 45 milliliters in 3 tbsp.
8 0
3 years ago
Read 2 more answers
Find the mass of 1.00 mol NaCl
Mnenie [13.5K]

Answer:  One mol of NaCl (6.02 x1023 formulas) has a mass of 58.44 g.

To go from grams to moles, divide the grams by the molar mass. 600 g58.443 g/mol = 10.27 mol of NaCl.

<h3>HOPE THIS HELPS HAVE A AWESOME DAY❤️✨</h3>

Explanation:

8 0
2 years ago
Read 2 more answers
What are the principles related to absolute, relative, carbon, or radioactive dating
stepladder [879]

The atoms of some chemical elements have different forms, called isotopes. These break down over time in a process scientists call radioactive decay. Each original isotope, called the parent, gradually decays to form a new isotope, called the daughter. Each isotope is identified with what is called a ‘mass number’. When ‘parent’ uranium-238 decays, for example, it produces subatomic particles, energy and ‘daughter’ lead-206.



5 0
2 years ago
In the chart, the organism Rr represents a genetically _____________ individual.
GalinKa [24]
Organism<span>. ' s rate of mutation is directly proportional to its adaptability. .... D. The cell membrane contains </span>genetic<span> information of the cell. .... </span>What<span> cellular structure was the dialysis tubing most likely</span>representing<span> in this experiment? ...... C </span>Rr<span> and </span>rr<span> only ... A healthy </span>individual<span> is a carrier of a lethal allele but is unaffected by it.</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement is true if the Hrxn of a reaction is positive?
    14·2 answers
  • Does anyone know What does pH= ?
    15·2 answers
  • What family are the elements carbon, germanium and lead in?
    13·2 answers
  • PART A) Theobromine, C7H8N4O2, is a component of chocolate. It is mildly diuretic, is a mild stimulant, and relaxes the smooth m
    8·1 answer
  • According to the kinetic theory of gases
    15·1 answer
  • Definition of diameter?
    13·1 answer
  • Are two atoms of the same element identical??​
    8·1 answer
  • If I have 450 grams of iorn how many miles of it do I have
    11·1 answer
  • Are all elements atoms and are all atoms elements?
    11·2 answers
  • As we move across the periodic table of elements, certain trends are evident. The placement of individual elements in the period
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!