2 years ago

Which statement describes the ocean floor?

Chemistry

1 answer:

Keith_Richards [23]2 years ago

4 0

Answer: C

Explanation: The ocean floor is largely unexplored so no one knows what it is like.

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A particular energy level in the hydrogen atom has E = -2.42 x 10-19 J. Use Bohr's model of the energy levels in hydrogen to cal

Zepler [3.9K]

Answer:

n=3

Explanation:

The expression for the energy of an electron for the hydrogen atom in the nth orbit is:-

$E_n=-2.18\times 10^{-18}\times \frac{1}{n^2}\ Joules$

Given that:-

$E_n=-2.42\times 10^{-19}\ Joules$

Applying in the equation to find the value of n as:-

$-2.42\times 10^{-19}=-2.18\times 10^{-18}\times \frac{1}{n^2}$

$n^2=\frac{2.18\times 10^{-18}}{2.42\times 10^{-19}}$

$n=\sqrt{\frac{21.8}{2.42}}=3$

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3 years ago

What units are used to express energy transfer?

hichkok12 [17]

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If there is 30 grams of O2 how many grams of CO2 can it make

igomit [66]

Explanation:

hope it helps you with the question

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3 years ago

What dose lava mean in spanish

Marysya12 [62]

Lava means wash in spanish.

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Which of the following is NOT a derived unit? a) <img src="https://tex.z-dn.net/?f=cm%5E%7B3%7D" id="TexFormula1" title="

seraphim [82]

Answer:

c) kg

Explanation:

Kilograms stands alone. It has to be hooked up to another unit for it to be a derived unit.

I am joyous to assist you anytime.

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