To determine the correct subscripts in a chemical formula, take H2O  as an example. H has a charged of positive 1 while O has a charge  of negative 2. To balance out the chaâ¦rges of the two elements, 2 H  cations are needed to balance out O negative 2 cation. This will  result to H2O.
How much area will one gallon of paint cover? Paint coverage is affected by numerous factors: the quality of the paint youâre using, the color youâre covering and the color youâre using. That said, a good rule of thumb is that one gallon of paint will cover between 350 and 400 sq. ft. Planning ahead will help you determine the amount of paint needed for a project.
Add all of the rectangles together to get your total square footage to be covered. 4. Read the label on the can to see the maximum coverage and divide your total square footage and round up to the next whole number to find out how many gallons you need. For Example: 20 feet x 8 feet = 160 square feet. Gallon of Paint covers 100 square feet, so 160/100=1.6 gallons. Rounding up, this wall takes 2 gallons of paint to cover. If you are not sure how to calculate your paint or stain needs, be sure to stop into your local Curtis Lumber with your dimensions and our Paint Pros will be happy to help you estimate the right amount.