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: The correct answer is Option 3.
Explanation:
The net energy absorbed or released in a chemical reaction is known as the total enthalpy change of the reaction. It is written as
The formula used to calculate total enthalpy of the reaction is:
where,
= Potential energy of the products
= Potential energy of the reactants
Hence, the correct answer is Option 3.
Related Questions
ICl has a higher boiling point than Br2. What is the best explanation for this?a.)Br2 experiences dipole0dipole interactions. b.)ICl experiences dipole0dipole interactions. c.)Br2 forms hydrogen bonds. d.)ICl experiences induced dipole0induced dipole interactions.
Determine the number of neutrons in an atom of Si-29
How many grams of kclo3 can be dissolved in 100 grams of water at 30 degrees Celsius
All of the statements are true about the arrangement of elements in the periodic table EXCEPT that theA) inert gases are in the group farthest to the right. B) metals are found on the left side of the periodic table. C) rare earth elements are in the first column, on the left. D) transition metals are in the center of the periodic table.
Record the results of each of your physical property tests in the table below.
Wood Clay Brick Iron Aluminum Copper Nickel
Flexibility
(?/10)
Magnetism
(number of paper clips)
Thermal Conductivity
(W/(m·K))
Electrical Conductivity
(x107 S/m)
Mass (g) 10g 10g 10g 10g 10g 10g
Volume (cm3)
Formula:
L x W x H
Density
(g/cm3)
Formula:
D=M/V
Answers
The exercise is to measure and record the Physical properties of materials, such as flexibility, magnetism, thermal conductivity, electrical conductivity and density. Magnetism and flexibility can be observed directly, while density, thermal conductivity, and electrical conductivity require calculations.
The student is asked to measure and record the physical properties of various materials.
Flexibility can be rated subjectively on a scale of 1-10, with 10 being most flexible.
Magnetism can be tested by seeing how many paper clips each material can hold.
Thermal Conductivity (W/(m·K)) is a measure of a material's ability to conduct heat, while Electrical Conductivity (x107 S/m) measures the material's ability to conduct electricity.
For density, you need the mass (M) and volume (V) of the material.
The mass is given as 10g for all materials. You have to measure the volume (V) using the formula length x width x height (L x W x H).
Then plug M and V into the density formula D=M/V to get the density in g/cm3. Keep in mind that each material will have different properties.
Learn more about Physical properties of materials here:
#SPJ1
b. NaCl()
c. NaCl(g)
d. NaCl(s)
Answers
Answer:
The arrangement of particles is least ordered is a > c > b > d
Explanation:
Given that,
The arrangement of particles is least ordered in a sample of NaCl.
We know that,
The least ordered arrangement are.
The form of state of particle in least ordered.
So, The least ordered arrangement will be
aqua > gas > liquid > solid
The arrangement of particles is least ordered in a sample of NaCl
Hence, The arrangement of particles is least ordered is a > c > b > d
Answers
(1) CuO (3) Cu2O
(2) CuO2 (4) Cu2O2
Answers
Answer : The correct formula of copper(I) oxide is, (3)
Explanation :
Copper(I) oxide is an ionic compound because copper element is a metal and oxide element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.
The nomenclature of ionic compounds is given by:
- Positive ion is written first.
- The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
- In case of transition metals, the oxidation state are written in roman numerals in bracket in-front of positive ions.
The charge on copper is (+1) and the the charge on oxide is (-2). The charges are not balanced. The charges are balanced by the criss-cross method.
Hence, the formula of copper(I) oxide is,
Answers
Answer:
greenhouse gases
Explanation:
B. 2
C. 4
D. 6
Answers
A carbon atom cannot form a 6 covalent bond with another atom, the max is 4.
Answer: 4