Lower ionization energy means that it is easier or harder to remove an electron

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

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

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?