How many moles of N2 are in a flask with a volume of 250 mL at a pressure of 0.56 atm and a temperature of 300 K?

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

Which of the following units is not an official si unit? mole liter kilogram ampere