I think it's a solar power might seem strange or futuristic but it's already quite common place you might have a solar powered quartz watch on your wrist or solar powered pocket calculator
atomic mass of carbon is C = 12 g/mol
atomic mass of hydrogen is H = 1 g/mol
now number of carbon atoms

Similarly the number of hydrogen atoms are

so Carbon atom and hydrogen atom must be in ratio of 10:30
so the ratio is 1:3
now the empirical formula is always in simplest form

Answer:
<em>option</em><em> A</em>
Explanation:
the diameter is twice the length of the radius
hope it helps
The sodium atom, Na, contains 11 protons, 11 electrons, and 13 neutrons.
the speed of sound in water is slower than the speed of air