4. Nicotine can be prepared in the reaction indicated here; in the reaction, the ammonium salt is treated with Na2CO3, a base. Draw a stepwise mechanism for the 2-step reaction.

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?