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goldfiish [28.3K]

3 years ago

7

A chemical ____ is a force of attraction between atoms or

2 answers:

aksik [14]3 years ago

5 0

A chemical bond is a force of attraction between atoms or ions that share or transfer valence electrons.

bogdanovich [222]3 years ago

3 0

Answer:

covalent bonds

Explanation:

A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds and may result from the electrostatic force of attraction between atoms with opposite charges, or through the sharing of electrons as in the covalent bonds.

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2 years ago

Magnesium carbonate decomposes on heating to form magnesium oxide and carbon dioxide as shown.

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3 years ago

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How many sub-energy levels does the 2nd MEL have?

DedPeter [7]

Answer:

n= | Shell | Maximum Number of Electrons

1 | 1st Shell | 2

2 | 2nd Shell | 8

3 | 3rd Shell | 18

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3 years ago

A 10.0 mL sample of HNO3 was exactly neutralized by 13.5 mL of 1.0 M KOH. What is the molarity of the HNO3? Use the titrations f

Kruka [31]

Answer: Thus molarity of $HNO_3$ is 1.35 M

Explanation:

To calculate the volume of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $HNO_3$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is KOH.

We are given:

$n_1=1\\M_1=?M\\V_1=10.0mL\\n_2=1\\M_2=1.0M\\V_2=13.5mL$

Putting values in above equation, we get:

$1\times M_1\times 10.0=1\times 1.0\times 13.5\\\\M_1=1.35M$

Thus molarity of $HNO_3$ is 1.35 M

7 0

3 years ago