The number of valence electrons in the representative (group A) elements is given by the .

How many liters of water vapor can be produced if 108 grams of methane gas (ch4) are combusted at 312 k and 0.98 atm? show all work. pls ! will mark as brainliest

Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.