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omeli [17]
3 years ago
10

How many molecular orbitals are present in the valence band of a sodium crystal with a mass of 7.90 g?

Physics
1 answer:
fgiga [73]3 years ago
8 0
Number of atoms equal the number of molecular orbitals as each atom has 1 atomic orbital and 1 electron.

Therefore,
Number of atoms = (mass/molar mass)*Avogadro's number = (7.90/22.99)*1.36*10^23 = 4.67*10^22 atoms.

Then,
Number of molecular orbitals = 4.67*10^22
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Answer:

\$100,000

Explanation:

<em>The top 5 winners of NASA's design contest winner received amount of  </em>\$100,000<em> </em>(Dollar One hundred thousand)<em>. </em>The respected amount was divided into 5 parts as there were 5 winners as well.

So, the amount was divided among the winners are as follows:

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3 years ago
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Anarel [89]

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Explanation:

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7 0
3 years ago
Which of the following is an accurate statement?
weeeeeb [17]

An object's momentum will change if there is a non-zero net external force acting on it. This assertion is true.

<h3></h3><h3>What is momentum?</h3>

The momentum is defined as the product of mass and the velocity of the body. It is denoted by the letter P. It occurs due to the applied force. Its unit is Kg m/s².

p=mΔV

If there is a change in the velocity there must be a force acting on the object.

If an object is acted on by a non-zero net external force, its momentum will not remain constant. is an accurate statement.

<h3></h3>

Hence, option B is correct.

To learn more about the momentum refer to the link;

brainly.com/question/4956182

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tiny-mole [99]

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