Given an atom with the electron configuration of 1s22s22phow many valence electron does this atom have

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d

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