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2 years ago

Q#5. The bond between which two atoms is most polar?

Chemistry

1 answer:

Ede4ka [16]2 years ago

8 0

Answer:

H-O

Explanation:

because oxygen and hydrogen have very high difference in electronegativity

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The reaction of hydrogen(g) with fluorine(g) to form hydrogen fluoride(g) proceeds as follows: H2(g) + F2(g) 2 HF(g) When 0.647

Nata [24]

Answer: The value of $\Delta H$ for the reaction will be -537 kJ

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of hydrogen gas = 0.647 g

Molar mass of hydrogen gas = 2 g/mol

Putting values in above equation, we get:

$\text{Moles of hydrogen gas}=\frac{0.647g}{2g/mol}=0.324mol$

We are given:

Energy released for 0.324 moles of hydrogen reacted is 174 kJ

For the given chemical reaction:

$H_2(g)+F_2(g)\rightarrow 2HF(g)$

By Stoichiometry of the reaction:

When 0.324 moles of hydrogen gas is reacted, the energy evolved is 174 kJ

So, when 1 mole of hydrogen gas will react, the energy evolved will be = $\frac{174kJ}{0.324mol}\times 1mol=537kJ$

Sign convention of heat:

When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.

Hence, the value of $\Delta H$ for the reaction will be -537 kJ

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3 years ago

Which of the substances shown below most likely exhibit hydrogen bonding with other identical

navik [9.2K]

Huhl. Iidudididuudufurururuururururu

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2 years ago

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Please help ASAP. No one could not help me with this question.

Tanya [424]

Answer:

sorry

Explanation:

I don't know the answer this is really confusing but I am really sorry you have to do this.

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2 years ago

Please help me the picture is above.

Andreas93 [3]

Answer:

Explanation:

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2 years ago

How many atoms are in 58.93 grams of cobalt (Co)?

Vadim26 [7]

If you have 58.93g of Co it means that you only have 1 mol (use a periodic table to find the answer, if you had more find it by proportion, it's easier).
There's 6.022 x 10^23 atoms per mol so you have 6.022 x 10^23 atoms of Co.
(once again if you had more mol, you could find the answer by proportions).

7 0

3 years ago

Q#5. The bond between which two atoms is most polar? ​

Q#5. The bond between which two atoms is most polar?