Suppose a mixture contains two isotopes of fictitious element "A" shown below. 45 A 45 A and 46 A 46 A In the mixture 33% are 45 A 45 A and 67% are 46 A 46 A . What is the relative atomic mass for element "A"? Show your work below.

What are the major products produced in the combustion of c10h22 under the following conditions? write balanced chemical equations for each. a. an excess of oxygen b. a slightly limited oxygen supply c. a very limited supply of oxygen d. the compound is burned in air

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption