Which serves as evidence for a scientific claim?
surveys of public opinion
company advertisements
controlled experiments
personal websites

The density of a planet is 0.69 g/cm3 (density of water is 1.0 g/cm3). which of the following planets might this be? a. mercury b. venus c. saturn d. mars

Matches the chemical name of each oxide of phosphorus to its chemical formula

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.