Report your results including: a) volume collected and % ethanol for each fraction (2 points), b) % yield of ethanol from molasses (2 points), and c) % yield ethanol from sugars, assuming approximately half of molasses is reactive sugars (2 points). Show at least one representative calculation for each part (a, b, and c).

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?