3 years ago

Exothermic reactions are chemical reactions that

Chemistry

2 answers:

Mkey [24]3 years ago

8 0

Answer:

Transfer heat to the surroundings.

Explanation

In an exothermic reaction energy is transferred to the surroundings so the surroundings increase in temperature.

If you carry out an exothermic reaction in a test tube you will feel the test tube heating up.

meriva3 years ago

3 0

An exothermic reaction is a chemical reaction that releases heat. it does not absorb

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Answer:

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Explanation:

We are given that

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Thickness of membrane, $dx=12nm=12\times 10^{-9} m$

$1 nm=10^{-9} m$

Area, $A=12\times 12=144nm^2=144\times 10^{-18} m^2$

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We have to find the flow rate of sodium ions.

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Using the formula

$\frac{dn}{dt}=-\frac{1.5\times 10^{-18}\times (144\times 10^{-18})\times 600}{12\times 10^{-9}}=-1.08\times 10^{23} mol/s$

$\frac{dn}{dt}=-1.08\times 10^{23} mol/s$

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