How many moles of sodium are required to produce 40. grams of NaOH? *

2Na + 2H20 (arrow) 2NaOH +H2

.25 moles
.50 moles
1.0 mole
2.0 moles

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