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Vinvika [58]
3 years ago
10

True or false: The force exerted onto an object must be perpendicular to the displacement if work is to be considered done.

Chemistry
1 answer:
RUDIKE [14]3 years ago
4 0

Answer:

its letter B. false

Explanation:

bjchakfbhc

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From the absorption spectra of a gas, we can see the  amount of thermal energy the gas contains (option D).

<h3>What is the absorption spectra?</h3>

The absorption spectra shows us the energy that is taken in by a gas. We know that when a gas is heated, it absorbs energy which shows up in its absorption spectra.

Thus, from the absorption spectra of a gas, we can see the  amount of thermal energy the gas contains.

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the properties of three undiscovered elements  is the correct answer.

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He left the gap in the table to put the elements which are not identified at that time and by glancing at the physical and chemical properties of an element next to the gap, Mendeleev could predict the properties of the not discovered elements.

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vlada-n [284]

Answer:

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