Which features of alveoli enable them to exchange gases efficiently? (Select all that apply.) small numbers of them in each lung
large surface area
surrounded by blood vessels
thin walls

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride

Word equation for k(s) +h2o(l) yield koh (aq) + h2