What is the mass of exactly 1 million helium atoms? The atomic mass of helium is 4.00 u. A) 6.6 $\times$ 10^-18 kg B) 6.0 $\times$ 10^-17 kg C) 6.6 $\times$ 10^-21 kg D) 6.0 $\times$ 10^-20 kg

Question

Quizplus · Accepted Answer

The mass of one helium atom is 4.00 u. Therefore, the mass of one million helium atoms would be:
4.00 u x 1,000,000 = 4,000,000 u
To convert this to kilograms, we use the conversion factor:
1 u = 1.66 x 10^-27 kg
So, the mass of one million helium atoms in kilograms would be:
4,000,000 u x (1.66 x 10^-27 kg/u) = 6.64 x 10^-20 kg
Which is closest to option C, 6.6 x 10^-21 kg.

What Is the Mass of Exactly 1 Million Helium Atoms ×\times×

What Is the Mass of Exactly 1 Million Helium Atoms $\times$