Answer:
162.2 g/mol
Explanation:
Molar mass is defined as the mass in 1 mole of the substance. It is calculated by adding the molar mass of the substituents each multiplied by the subscript they have in the formula.
Thus, To calculate molar mass of nicotine having formula, 
Molar mass of C = 12.0107 g/mol
Molar mass of H = 1.00784 g/mol
Molar mass of N = 14.0067 g/mol
Thus, molar mass of nicotine =
= 162.2 g/mol
The acceleration of Moby is 2 m/s²
<u>Explanation:</u>
Given:
Time, t = 5 seconds
Velocity, v = 10 m/s
Acceleration ,a = ?
We know:

On substituting the value we get:

Therefore, the acceleration of Moby is 2 m/s²
I would actualy label it or put a little diagram below to show what part it is
240g
Explanation:
Number of moles = 5
Molar Mass = 16 x 3 = 48
Number of moles = Mass/Molar Mass
Mass = Number of moles x Molar Mass
Mass = 5 x 48
Mass = 240g