11. Do the blue dots on the graph represent an object that

Chemistry

1 answer:

dolphi86 [110]3 years ago

5 0

I think it’s C
I’m so sorry if it’s wrong!

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Determine the energy released when an electrons transitions from n =3 to n = 2

stealth61 [152]

Answer:

e. none of the above.

Explanation:

Hello there!

In this case, according to the Rydberg's equation for the calculation of energy during electron transitions:

$E=R(\frac{1}{n^2_{final}} -\frac{1}{n^2_{initial}} )z^2$

In such a way, we may assume that this element is H so z=1m the final energy level is 2 and the initial one is 3; thus, we plug in the values, and the Rydberg's constant to obtain:

$E=2.178^{-18}J(\frac{1}{2^2}} -\frac{1}{3^2} )1^2\\\\E=3.03x10^{-19}J$

Thus, the answer is e. none of the above because the exponent is not given correctly.

Regards!

3 0

3 years ago

How many grams of nickel are in 1.57 moles of nickel

Crank

Question: <span>How many grams of Nickel are in 1.57 moles of nickel

There are 58.6934 grams of Nickel in 1 mole.

There are 92.1486 grams of Nickel in 1.57 moles.

Nickle is the most common ore to find on Earth. The atomic number of Nickle is 28 and the symbol for Nickle is Ni. The color is silvery-white with a tinge of gold.

Final Answer:
</span>
There are 92.1486 grams of Nickel in 1.57 moles.

8 0

3 years ago

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State whether the following is an example of a physical or chemical change:! 21. Burning a log: ________________________________

lyudmila [28]

Answer:

Physical change

Explanation:

Because it doesn't require any chemical to change

6 0

3 years ago

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