Answer:
The first one is 425g of copper
Explanation:
<h2>Answer : Option B) Hydrogen</h2><h3>Explanation :</h3>
All fossil fuels contains hydrocarbons in it. Amongst the given options hydrogen is the correct answer. Except that it contains carbon in it. Hydrocarbons are those class of compounds which contains hydrogen and carbon as element in it.
They are considered to be good fuels because they naturally bring out complete combustion as they contain hydrogen and carbon in its compound form.
Answer:
<u>A baseball speeds up as it falls through the air.</u>
<u>A bumper car hit by another car moves off at an angle.</u>
<u>A balloon flies across the room when the air is released.</u>
Explanation:
<em>Let me know if you need any other help</em>
<em />
<span>we know that each
element has an unique spectra and it can be used to identify the
element. it shows that the energy levels of the electrons and different colors are the result of different wavelengths.
hope it helps
</span>
I believe it is C; reasoning being that the hint for physical change is," the producing of a gas," chemical "that's new and diff. substance. "
