PLZ HELP: Identify each of the following as a covalent compound or ionic compound. Then provide either the formula for the compounds identified by name or the name for those identified by formula. A. Li2O
B. Dinitrogen Trioxide
C. PCl3
D. Maganese(lll) oxide
E. Calcium bromide

Asuspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. if one wishes to follow this process by monitoring the release of 14co2, at which positions in the glucose molecule would the 14c label need to be incorporated?

Ablock of aluminum is dropped into a graduated cylinder with an initial volume of water at 75ml and the volumes rises to 90ml. if the block has a mass of 40.5 g what is its density ?

What is the relative mass of an electron? a) 1/1840 the mass of a neutron + proton b) 1/1840 the mass of an alpha particle c) 1/1840 the mass of a c-12 atom d) 1/1840 the mass of a hydrogen atom