The diameter of a copper atom is approximately 2.28×10−10 m. The mass of one mole of copper is 64 g. Assume that the atoms are arranged in a simple cubic array. Remember to convert to SI units.

(a) What is the mass of one copper atom, in kg?

Answer : The mass of one copper atom is, [tex1.06\times 10^{-25}kg[/tex]

Explanation : Given,

Mass of one mole of copper = 64 g

First we have to convert the mass of copper from gram to kilogram.

Conversion used :

1 kg = 1000 g

or,

1 g = 0.001 kg

So, mass of copper = 64 g = 0.064 kg

Now we have to calculate the mass of one copper atom.

As, atoms of mass of copper = 0.064 kg

So, 1 atoms of mass of copper =

Thus, the mass of one copper atom is, [tex1.06\times 10^{-25}kg[/tex]

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.