3. Given the Lewis electron-dot diagram: H
H:C:H
I: 0:1
Which electrons are represented by all of the dots?
1) the carbon and hydrogen valence electrons
2) the carbon valence electrons, only
3) all of the carbon and hydrogen electrons
4) the hydrogen valence electrons, only

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397