How can scientists control the flammability of a substance?

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

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.