2 years ago

Which term describes a change that occurs with no new substances being formed?

Chemistry

1 answer:

Elina [12.6K]2 years ago

8 0

C. physical change

Explanation:

That's the answer

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3 years ago

If 0.2 g of nitrobenzene are added to 10.9 g of naphthalene, calculate the molality of the solution. (given: molar mass of nitro

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Molality is defined as 1 mole of a solute in 1 kg of solvent.

Molality=

$\frac{Number of moles of solute}{Mass of solvent in kg}$

Number of moles of solute, n=

$\frac{Given mass of the substance}{Molar mass of the substance}$

Given mass of the nitrobenzene=0.2 g

Molar mass of the substance= 123.06 g mol⁻¹

Number of moles of nitrobenzene,

$n= \frac{0.2 }{123.06}$

Number of moles of nitrobenzene, n= 0.0016 mol

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The value of the rate constant for a gas phase reaction can be changed by increasing the A. temperature of the reaction vessel.

prohojiy [21]

Answer:

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Explanation:

temperature of the reaction vessel

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