Comparing the two TLC runs on the three compounds together (runs #1 and #2), you should have noticed that in one case, one compound eluted in "first place" while in the other run, a different compound eluted in first place. Suggest a reason why this might occur.

Which of these is the result of scientific research and not engineering? a. a new shoe design that features air cushioning for more comfort and protection b. the creation of glass with uv protection. c. a conclusion about diet commonalities among diabetics. d. the development of a smaller, more compact missile.

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?