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Anna007 [38]
3 years ago
5

If coefficients of a balanced equation are doubled the enthalpy change for reaction is

Chemistry
1 answer:
BlackZzzverrR [31]3 years ago
5 0

Answer:

Explanation

ΔH is directly proportional to the quantity of a substance that reacts or is produced by a reaction. Enthalpy is directly proportional to mass. Therefore, if you double the coefficients in an equation, then the value of ΔH is multiplied by two.

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(b) If this solution is treated with NaOH, the salt is converted to cocaine. How much more water (L) is needed to dissolve it?
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0.33L more water is needed to dissolve it.

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7 0
1 year ago
How did thompson know the charge of the particle he discovered was negative?
bulgar [2K]

Answer:

Explanation:

The electron is subatomic particle that revolve around outside the nucleus and has negligible mass. It has a negative charge.

Symbol= e-

Mass= 9.10938356×10-31 Kg

It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.

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When electric field is applied cathode ray is deflected towards the positively charged plate.

Hence it was consist of negatively charged particles.

8 0
3 years ago
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