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Dennis_Churaev [7]
3 years ago
6

Which of the following is a covalent bond? A NaCl B K2O C H2O D MgO

Chemistry
1 answer:
Black_prince [1.1K]3 years ago
7 0

Answer:

H_2O

Explanation: Research has proven that ;

Water is a Polar Covalent Molecule

It consists of 2 Hydrogen molecules bonded to one Oxygen molecule and  the two hydrogen atoms are not evenly distributed around the oxygen atom.

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Why doesn’t the KHP concentration have to be exactly 0.100M? Explain using complete sentences.
ollegr [7]

Answer:

The answer is in the explanation.

Explanation:

The KHP is an acid used as standard in titrations to find concentration of bases as NaOH.

The reaction that explain this use is:

KHP + NaOH → KNaP + H2O

<em>where 1 mole of KHP reacts per mole of NaOH</em>

That means, at equivalence point of a titration in which titrant is NaOH, the moles of KHP = Moles of NaOH added

With the moles of KHP = Moles of NaOH and the volume used by titrant we can find the molar concentration of NaOH.

The moles of KHP are obtained from the volume and the concentration as follows:

Volume(L)*Concentration (Molarity,M) = moles of KHP

If the concentration is more or less than 0.100M, the moles will be higher or lower. For that reason, we need to know the concentration of KHP but is not necessary to be 0.100M.

8 0
3 years ago
3. Explain the relationship between power, energy and time.
likoan [24]
There is a very simple relationship between the three. First off, power is the amount of energy used over a certain amount of time. Energy is the capacity of carrying out that power. Lastly, time depends on how much energy you have to exert the work.

Hope this helps :)
7 0
3 years ago
What are the atomic numbers for sodium,iron and sulfur???
Nastasia [14]

Answer: sodium-11   iron-26   sulfur-16

Explanation:

3 0
3 years ago
Read 2 more answers
Salts usually have a low melting point true or false
antoniya [11.8K]
Hello!

This is false!! It is the other way around. They usually have a very high melting point. For example table salt is around 800deg C which is approx just under 1500deg F.

Hope this helps. Thank you
3 0
3 years ago
CH3CH2CH2CH2CH2CH3 + Br2 →
vlada-n [284]

Answer:

2 \sqrt{1176} \\mi infierno:v

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