Consider the fermentation reaction of glucose: C6H12O6 → 2C2H5OH + 2CO2 A 1.00-mol sample of C6H12O6 was placed in a vat with 100 g of yeast. If 37.0 g of C2H5OH was obtained, what was the percent yield of C2H5OH? Written work required.

How many lone pairs are present around the central atom in the Lewis structure of XeF 2? Written work required (electron calculation + Lewis structure)

Potassium hydrogen carbonate decomposes according to the reaction below: 2 KHCO3(s)  →  K2CO3(s) + CO2(g) + H2O(l) How many moles of potassium carbonate are produced if 311 g of potassium hydrogen carbonate is heated?

Hund’s rule states that the most stable arrangement of electrons (for a ground state electron configuration)

How many s orbitals are in the n = 3 shell?

A pure substance composed of two or more different elements is a(n) ________. Written work required.

A general chemistry student found a chunk of metal in the basement of a friend’s house. She measured the mass of the metal to be 112.5 g. Then she dropped the metal into a graduated cylinder containing 26.0 mL of water, and the water level rose to 67.4 mL. Of the following metals, which is the most likely:

What is the O−C−N bond angle in OCN–? Show your work in the submitted scratch paper

Electronegativity is a measure of _____.

How many lone pairs are present around the central atom in the Lewis structure of XeF2? Show your work in the submitted scratch paper