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maw [93]
3 years ago
5

The galaxy we live in is the Milky Way galaxy, and it is a spiral galaxy. Galaxies contains billions of which of the following?

Chemistry
1 answer:
yKpoI14uk [10]3 years ago
5 0

Answer:

D. Stars is the correct answer

Please give my answer the brainliest...

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kondaur [170]
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6 0
3 years ago
An atom of 24/11 na decays by gamma decay which atom is left after the decay
hammer [34]

Answer:

Hello There!!

Explanation:

The atom is still 24Na.

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What is heating and cooling
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make or become hot or warm is heating.

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3 years ago
In a sample containing 100 atoms of X, 70 were found to be 9X while 30 were 11X isotopes. Determine the average relative atomic
Burka [1]

The average relative atomic mass of a sample containing 100 atoms of X, 70 were found to be 9X while 30 were 11X isotopes is 9.6g.

<h3>What is Atomic mass? </h3>

Atomic mass is defined as the whole mass of an atom.

It is also defined as the sum of atomic number and number of neutrons.

Atomic mass = Atomic number + neutrons

<h3>What is Isotopes?</h3>

Isotopes are the those element which have same atomic number but have different mass number and number of neutrons.

The average relative atomic mass can be calculated as

mass of isotopes/ mass of sample

mass of all isotopes = (70 × 9X) + (30 × 11X)

=(630 + 330) X

= 960X

Average relative atomic mass = 960X/ 100 X

= 9.6 g

Thus, we concluded that the average relative atomic mass of a sample containing 100 atoms of X, 70 were found to be 9X while 30 were 11X isotopes is 9.6g.

learn more about atomic mass:

brainly.com/question/14250653

#SPJ9

5 0
1 year ago
A.<br> B.<br> C.<br> D.<br><br> what could be the correct answer? Help me please
AlladinOne [14]

Answer:

A

Explanation:

5 0
3 years ago
Read 2 more answers
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