posted by Danny on .
Which is a molecule of phosphoric acid contains 3 atoms of hydrogen to every 4 atoms of oxygen. Could a compound containing 16 atoms of oxygen and 12 atoms of hydrogen be phosphoric acid? Explain.
Mr.Lee has 3/10 of his gross salary deducted for taxes. If Mr.Lee makes $900 a week, how much is deducted for taxes?
1. Yes, because the numbers are proportional.