How many grams of AlCl3 are produced if 30.0g of H2 are produced?
2Al+6HCl —> 2AlCl3+ 3H2

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

diaria maybe go see a doctor about that

answerambulatory;