If the sun was not there the earth would travel in a straight line
I think the awnser to your question is C
The molar mass<span> is the </span>mass<span> of a chemical element or a chemical compound (g) divided by the amount of substance (mol).
Hope this helps!</span>
Speed in km/hr = 15 x 18
------------
5
= 54 km/hr.
Hope this helps!
