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FinnZ [79.3K]
3 years ago
7

SCIENCE!!! HAHA X'D : Which one of the following is an element?

Chemistry
2 answers:
yan [13]3 years ago
8 0
Oxygen is the only element in the list.
KatRina [158]3 years ago
5 0

Oxygen is your answer

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guys im morgz im going to put a nail on the seat in my mom room and im going to see how up her a- s s it will go lets see
vagabundo [1.1K]

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go outside and ponder your life choices dork.

6 0
2 years ago
1
trasher [3.6K]

Answer:

I believe the answer is B

Explanation:

A nucleus of an atom has protons and neutrons. We know that a proton has a charge of +1 , while a neutron has no charge, or 0 . Therefore, the nucleus of an atom will always have a positive charge.

6 0
2 years ago
The half-life period for a first order reaction is independent of
maria [59]
I believe the answer is concentration

Sorry if I’m wrong hope this helps
4 0
2 years ago
Read 2 more answers
Why is burning wood a chemical change?
Nitella [24]
There are 4 things that are evidence of a chemical change.
1)Change in color
2)Change in shape (gas being let out)
3)Change in temperature
4)Change in smell

Burning wood is a chemical change because it has a change in color, and shape.
3 0
3 years ago
Describe a method to calculate the average atomic mass of the sample in the previous question using only the atomic masses of li
alexira [117]

Answer:

Explanation:

To calculate their average atomic masses which is otherwise known as the relative atomic mass, we simply multiply the given abundances of the atoms and the given atomic masses.

The abundace is the proportion or percentage or fraction by which each of the isotopes of an element occurs in nature.

This can be expressed below:

        RAM = Σmₙαₙ

where mₙ is the mass of isotope n

           αₙ is the abundance of isotope n

for this problem:

RAM of Li = m₆α₆ + m₇α₇

       m₆ is mass of isotope Li-6

        α₆ is the abundance of isotope Li-6

       m₇ is mass of isotope Li-7

        α₇ is the abundance of isotope Li-7

3 0
3 years ago
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