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Dima020 [189]
3 years ago
14

Differentiate between Mendeleev's Period law and Modern Periodic law​

Chemistry
1 answer:
NeX [460]3 years ago
7 0
<h2>see in the attachment hope it helps you</h2>

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A chemist wants to observe the following reaction:
stiv31 [10]

It take more energy to break the bonds of the reactants and less energy is given off when the product bonds are formed.

<h3>What is Energy?</h3>

Energy is defined as the ability to do work. Work is done in the breaking or formation of bonds.

The standard Enthalpy (ΔH) of water which was formed in the given reaction is negative.

ΔH= Δproduct - Δreactant

This means that the energy to break the bonds of the reactants is more.

Read more about Enthalpy here brainly.com/question/14291557

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2 years ago
Butter melt when you heat it in a pan on the stove. Is this a chemical change or physical change? How can you tell?
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It would be an physical change ; if you melt butter the butter goes from a solid to a liquid so therefore the physical state is changed.
4 0
3 years ago
sorry that answer is wrong. A chemical bond is the force that holds together the elements in a compound
olya-2409 [2.1K]
That is a true statement <span />
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3 years ago
What is wind?
barxatty [35]

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5 0
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At what temperature scale Fahrenheit shows double than Kelvin scale​
sergij07 [2.7K]

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-12.3 degrees F.

Originally Answered: At what temperature does the Kelvin scale read double the Fahrenheit reading? -24.6 degrees C = -12.3 degrees F.

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