Suggest one reason why hydrogen is called a "clean fuel"

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

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