Answer:
it is 1,4
Explanation:
Just took the test hope you get it right. c:
Transform the g into kg by multiplying 0.74 by 10^-3. then divide 2.4 kg by the density
EM is created by moving charges back and forth will produce oscillating electric and magnetic fields, and these travel at the speed of light
are present in 
<u>Explanation:</u>
It is known that each mole of an element is composed of avagadro's number of molecules. So if we need to determine, we need to divide the number of molecules with the avagadro's number.
So,

As here
molecules of carbon di oxide is given. So the moles in it will be
No. of moles of carbon dioxide = 
No. of moles =
moles of carbon dioxide.
Thus,
of carbon dioxide are present in
.
0.1 Centigrams Per Milliliter.
Always check the results; rounding errors may occur.