Obviously the more product you have and the closer the impurities are, the more silica gel you will need. 1  A good rule of thumb is: 2  for difficult separations (Î´CV â¤ 1) use up to 100 g (~200 mL) of silica gel per gram of compound to be purified (1% load)
Median age at first marriage for American Indian and Alaska Native men and women age 15 to 54, respectively, in 2010. For the population as a whole in this age range, the respective numbers were 28.7 and 26.7 years. The difference in the median age at first marriage between American Indian and Alaska Native women and women overall is not statistically significant.
Among American Indians under 45 years of age in 1979-81, 45% of deaths or 1165 deaths per year were excess deaths. The leading cause of excess deaths to American Indians in 1979-81 was death from unintentional injuries which accounted for 48% of excess deaths among males and 40% of excess deaths for females.