What is the mass percent of carbon in propanoic acid (c2h5cooh)? (the molar mass of c = 12.01, h = 1.0079, and o = 16.00.)
1. 43.20%
2. 43.79%
3. 48.64%
4. 51.56%
5. 52.41%

When undergoing chemical reactions where does the reactant combine to the enzyme?

Why does his teacher ask him to balance the equation by including the correct coefficient

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