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igomit [66]
3 years ago
8

Which best describes how an ionic bond forms? A.Two molecules share an electron. B.One atom pulls an electron from another atom.

C.Two atoms share valence electrons. D.Two atoms both lose an electron.
Chemistry
2 answers:
Tema [17]3 years ago
3 0
Your answer Should be B

babunello [35]3 years ago
3 0

Answer:

The correct answer is B.One atom pulls an electron from another atom.

Explanation:

Chemical bonds are made so that atoms can have their entire outer layer, and thus have a stable electronic configuration.

An ionic bond is produced between metallic and non-metallic atoms, where electrons are completely transferred from one atom to another. During this process, one atom loses electrons and another one gains them, forming ions. Usually, the metal gives up its electrons forming a cation to the nonmetal element, which forms an anion.

So, <u><em>the correct answer is B.One atom pulls an electron from another atom.</em></u>

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C3H8+3O2 = 3CO2+4H2O what is the enthalpy combustion
dezoksy [38]

Answer:

\Delta H_{comb}=2043.85kJ/mol

Explanation:

Hello there!

In this case, according to the given chemical reaction, it possible for us to set up the expression for the calculation of the enthalpy change as shown below:

\Delta H_r=-\Delta H_{comb}=3\Delta _fH_{CO_2}+4\Delta _fH_{H_2O}-\Delta _fH_{C_3H_8}-3\Delta _fH_{O_2}

Thus, given the values of the enthalpies of formation on the attached file, we obtain:-\Delta H_{comb}=3(-393.5kJ/mol)+4(-241.8kJ/mol)-(-103.85kJ/mol)-3(0kJ/mol)\\\\-\Delta H_{comb}=-2043.85kJ/mol\\\\\Delta H_{comb}=2043.85kJ/mol

Best regards!

8 0
3 years ago
Which of the following has higher ionization energy - Be or Ca. Explain your choice in terms of attractive force between protons
Vlad [161]

Answer:

Ca has the greater Ionization Energy because the Trend is I/e decreases as you move down a group. Therefore, Ca has the greater I/e

Explanation:

3 0
3 years ago
What is the molar mass of a substance?
OlgaM077 [116]

oops pls forgive me I accidentally did the wrong question.

4 0
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80cm^3 of oxygen gas diffused through a porous hole in 50 seconds how long wiil it take 120cm^3 of nitrogen (iv) oxide to diffus
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Answer: it will take 89.93secs

Explanation:Please see attachment for explanation

5 0
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Given the reaction:
STatiana [176]

answer:

as per the formula of given carbohydrate the answer is 15 moles

explanation:

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