1. What is the highest possible altitude Polaris?

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Explanation:

At the Equator (0° of latitude), the North Star is on the horizon, making an angle of 0°. For any point between the Equator and the North Pole, latitude is obtained simply by measuring the altitude of Polaris: at 30°N the star is 30° above the horizon, at 63°N, it is 63° above the horizon, and so on.

we are given the element carbon which has  a molar mass of 13 g/mol. in order to determine the numbre of atoms present in the element, we divide first the mass by the molar mass equal and then multiply by the Avogadro's number. The number of atoms in total is equal to 2.32 x1023 atoms