A 10.0 g sample of wood is burned in oxygen. If the mass of all the products produced is 13.4 g, what mass of oxygen must have reacted?

Monkeys and bats have similar bone structure in their forelimbs. however, monkeys have longer forelimbs to use for climbing and swinging in trees. bats have shorter forelimbs to use for flight. which term best describes how monkey and bat forelimbs are related to each other? a. homologous b. embryonic c. analogous d. vestigial

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?