PATRICK N. answered • 10/01/15
Tutor
5.0
(467)
Experienced Math, Science and Test Prep Tutor. Top 10% Tutor in 2019
You are given the mass of 1 neutron as 1.67 x 10-24 g therefore, to find the number of neutrons in 1g
You would divide 1 g by the mass of one neutron to get the total number
1g/ 1.67 x 10-24 g = 5.988 x 1023 neutrons
Can be rounded off to 5.99 x 1023 neutrons
PATRICK N.
tutor
You are very welcome. To answer your question, remember the 1g can be written as 1 x 10^0 which is just 1. And when we divide exponents, we subtract so 10^0 divided by 10^-24 becomes 10^(0- -24) which equals 10^24.
Your final answer is 0.5989 x 10^24 = 5.99 x 10^23
Hope this helps
Report
01/11/19
Thomas G.
But why is the - gone after dividing? But thanks for the rest. Was really really hepful. Youre helping many people out here in the world without knowing. In appreciate that.01/11/19