Fewer option for consumers
<span>its because they're both structured the same way. for example the sun and the nucleus are the same (in the centre) and the electrons and planets orbiting are the same</span>
Answer: The answer would be 85F
Explanation: The odour molecules become airborne much more quickly in a warmer environment than a colder one. So the bottle of perfume to spread faster through the air faster when the room temperature is 85F
Given :
10 gram sample of propane( C₂H₈ ).
To Find :
The number of moles of propane in given sample.
Solution :
Molecular mass of propane, M = (2 × 12) + ( 1 × 8 ) gram/mol
M = 32 gram/mol
We know, number of moles is given by :
Number of moles, n = m/M
n = 10/32 mol
n = 0.3125 mol
Therefore, number of moles in given sample is 0.3125 mol.
Answer:True
Explanation:
Light year is the unit of distance and not a unit of time.
Light year is used to measure astronomical distances.
It is defined as the distance which light travels in one year.
The distance which light travels in one year is around 9.46 trillion kilometers
Thus 1 light year = 
km.
Thus the given statement that A light-year is the distance that light travels in one year is true.
