The net energy released or absorbed during a reversible chemical reaction is equal to(1) the activation energy of the endothermic reaction
(2) the activation energy of the exothermic reaction
(3) the difference between the potential energy of the products and the potential energy of the reactants
(4) the sum of the potential energy of the products and the potential energy of the reactants

Answers

Answer 1

Answer:

Answer: The correct answer is Option 3.

Explanation:

The net energy absorbed or released in a reaction is known as total enthalpy change of the reaction. It is designated as $\Delta H_(rxn)$

It is defined as the difference between the total potential energy of the products and the total potential energy of the reactants. The equation for this is given by:

$\Delta H_(rxn)=\sum \Delta H_(products)-\sum \Delta H_(reactants)$

where,

$\Delta H_(products)$ = Total potential energy of the products

$\Delta H_(reactants)$ = Total potential energy of the reactants

Hence, the correct answer is Option 3.

Answer 2

Answer: 3. The difference between the potential energy of the products and the potential energy of reactants.

Related Questions

If you are using a thermometer, you are measuring the
A hypothetical element consists of 3 isotopeswith the following masses and natural abundances.Isotopic NaturalMass AbundanceNumber %1 39 78.82 40 18.13 41 3.1what is the atomic weight
Knowledge of atomic structure has evolved over time. Thomson discovered that atoms contain electrons, Rutherford discovered that most of the mass of an atom is concentrated in its center, and Bohr discovered that electrons orbit the nucleus. Taken together, what do these discoveries demonstrate
The two types of scales that are printed on the meter face of an analog VOM are A. single and double scales.B. polarized and non-polarized scales.C. positive and negative scales.D. linear and non-linear scales.
Of the following transitions in the Bohr hydrogen atom, the __________ transition results in the emission of the highest-energy photon.A. n=6 to n=1B. n=1 to n=6C. n=1 to n=5D. n=5 to n=1

How many grams are in 4.5 moles of Li2O?

Answers

ur answer is 134.1 grams

The elements in the middle of the periodic table are known as:a. Noble elements
c. Transition elements
b. Heavy metals
d. Covalent elements

Answers

Answer:

The correct answer is c. Transition elements

Explanation:

Transition elements are often called transition metals and are located in the middle of the Periodic Table, in the d-block (because they have an incomplete d-orbital). They are all metals, for example: iron (Fe), copper (Cu), titanium (Ti), etc, and they have high melting and boiling points.

A catalyst works by(1) increasing the potential energy of the reactants(2) increasing the energy released during a reaction(3) decreasing the potential energy of the products(4) decreasing the activation energy required for a reaction

Answers

Answer: Option (4) is the correct answer.

Explanation:

Activation energy is the minimum amount of energy required by reactant molecules to undergo a chemical reaction.

Whereas a catalyst is defined as the substance that helps in increasing the rate of reaction by decreasing the activation energy without itself getting consumed in the reaction.

When a catalyst decreases the activation energy then molecules with lesser energy become able to participate in the reaction and thus, products are obtained at a faster rate. Hence, a catalyst increases the rate of a reaction.

Thus, we can conclude that a catalyst works by decreasing the activation energy required for a reaction.

The catalyst (4) decreases the activation energy required for a reaction, by holding reactants in place

Which type of forecasting is impacted the most by the butterfly effect

Answers

Answer:storms high winds and water pools

Explanation:

Answer: long-range forecasts.

Ricardo wants to determine the length of a strip of zinc metal. What is the SI unit for length? foot inch liter meter

Answers

Answer : The correct option is, meter

Explanation :

S.I : It is known as the international System of Units. It is defined as a scientific method to express the magnitude of the several basics units.

There are seven basic units in the system from which the other units are derived.

The seven base unit are, meter for length, kilogram for mass, second for time, ampere for current, kelvin for temperature, mole for amount of substance and candela for intensity.

As per question, the S.I unit of length of a strip of zinc metal is, meter.

Hence, the correct option is, meter

The Si unit for length is meters.

You wash dishes for a chemistry laboratory to make extra money for laundry. You earn 12 dollars/hour, and each shift lasts 75 minutes. Your laundry requires 12 quarters/load. How many loads of laundry will each shift pay for if the cost per load rises to 16 quarters?

Answers

You calculate the amount of loads of laundry as follows:

((6 x 0.25)/ load) x 10 loads = 15.00 total cost required for laundry

(6.00 / 60 min) x (75 min/shift) = 7.50 cost / shift

15.00 / (7.50 / shift) = 2 loads of laundry

Hope this answers the question.

Each shift worked can pay for 3.75 loads of laundry if each load costs 16 quarters.

Further Explanation

This problem can be solved using simple dimensional analysis. The steps are:

Sort the given. Identify the conversion factors or equalities that may be used. Identify what is required.
Set up the dimensional analysis ensuring that units cancel out until only the desired unit is left. The equalities in the problem may be used as conversion factors.

STEP 1: Sort first the given in the problem to identify possible conversion factors to be used in the dimensional analysis.

The following equalities are given in the problem:

1 shift = 75 minutes
12 dollars = 1 hour
1 load = 16 quarters
1 dollar = 4 quarters

STEP 2: From these equalities, the following dimensional analysis can be set up:

$no. \ of \ load \ = 1 \ shift * (75 \ min)/(1 \ shift) * {(1 \ hr)/(60 \ min) * (12 \ dollars)/(1 \ hr) * { (4 \ quarters)/(1 \ dollar) * (1 \ load)/(16 \ quarters)$

$no. \ of \ load \ = 3.75 \ load$

Therefore, one shift can pay for 3.75 loads of laundry.

LEARN MORE

Learn more about Unit Conversion brainly.com/question/1594497
Learn more about Dimensional Analysis brainly.com/question/8013893

Keywords: dimensional analysis, problem solving

Other Questions

Identify the bond types between the carbon and the two oxygen Atoms in the carbon dioxide molecule.

What is the major difference between a solution and an ordinary mixture?

_____ is a halogen used in gaseous and liquid form for large scale disinfection of drinking water and sewage. A. Iodine B. Chlorine C. Bromine D. Fluorine E. Betadine

What do you call the amount of water vapor in the air?