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Ierofanga [76]
3 years ago
5

What is the charge on an atom after it gains two electrons during the formation of a bond?

Chemistry
1 answer:
vekshin13 years ago
8 0

Answer:

two negative charges is the answer of your question

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Carbon reacts with oxygen to produce carbon dioxide (CO2 (g), Delta. Hf = –393. 5 kJ/mol) according to the equation below. Upper
Komok [63]

The change in enthalpy for the reaction of carbon dioxide is -393.5 kJ/mol. Thus, option A is correct.

The change in enthalpy of the reaction is given by the energy of the product and the energy of reactant difference.

The chemical equation for the reaction is:

\rm C \;(s)\;+\;2\;O_2\;(g)\;\to\;CO_2\;(g)

<h3>Computation for the enthalpy change</h3>

The standard enthalpy change for carbon dioxide is -393.5 kJ/mol

The standard enthalpy change for oxygen is 0 kJ/mol

The change in enthalpy of reaction is given as:

\rm \Delta \textit H=CO_2-2\;\times\;O_2\\\Delta \textit H=-393.5\;kJ/mol-2\;\times\;0\;kJ/mol\\\Delta \textit H=-393.5\;kJ/mol

The change in enthalpy for the reaction of carbon dioxide is -393.5 kJ/mol. Thus, option A is correct.

Learn more about change in enthalpy, here:

brainly.com/question/1301642

4 0
2 years ago
Explain in terms of chemical reactivity why the elements in group 18 on the modern periodic table were not identified by Mendele
Makovka662 [10]

Answer:

elements tend not to react with other elements, there were no oxide compounds for Mendeleev to study. –Group 18 elements are generally unreactive. sodium ion is smaller because the sodium atom lost one electron. –An Na+ ion is smaller because it has one fewer electron shell.

Explanation:

can you me as brainliest if its right? i just need a few more to rank up! ^-^

Also have a great day and good luck in your studies!

6 0
3 years ago
What is ideal gas constant?? g0ogle doesnt got any good answerss
irga5000 [103]

Answer:

An ideal gas is a gas with particular characteristics.

Explanation:

  • The particles have no volume
  • All collisions between particles are elastic collisions and lose no kinetic energy
  • The particles neither attract each other nor repel
  • They have random movement

Ideal gases are hypothetical which means that they do not exist in their true form.

hope this helps, pls mark brainliest :D

8 0
3 years ago
How many electrons in an atom could have these sets of quantum numbers? n=4, l=3
inn [45]
Using the formula 2n² put in the value of n which is 4

the answer is 2×4² which is 2×16

The answer is 32.

this is the maximum no of electron acceptable into the electron shell.

Please mark me as brainliest.
4 0
3 years ago
27. Sample of neon gas has a pressure of 4.1 atm and argon gas with a pressure of 3.2 atm are added to a
MrRa [10]

Answer:

Option C. 13.5 atm

Explanation:

From the question given above, the following data were obtained:

Pressure of Neon (Pₙₑ) = 4.1 atm

Pressure of Argon (Pₐᵣ) = 3.2 atm

Pressure of nitrogen (Pₙ₂) = 6.2 atm

Total pressure (Pₜ) =?

The total pressure in the container can be obtained by adding the pressure of the individual gases. This is illustrated below:

Pₜ = Pₙₑ + Pₐᵣ + Pₙ₂

Pₜ = 4.1 + 3.2 + 6.2

Pₜ = 13.5 atm

Therefore, the total pressure in the container is 13.5 atm

8 0
3 years ago
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