Someone help me please I need to finish this by today

Option A

Explanation:

First calculate the moles of each reactant,

Moles of SO2 = 544.5 * 1 mole / 64.06 g,

Moles of SO2 = ( About ) 8.5 Moles,

Moles of O2 = 160 * 1 mole / 32 g,

Moles of O2 = 5 Moles,

Now the molar ratio of SO2 to SO3 would be 2 : 2, so that you could say SO3 = ( About ) 8.5 Moles. Respectively, the molar ratio of O2 to SO3 would be 1 : 2, so that SO3 = 5 Moles. The limiting reactant would thus be SO2.

Using that information, we can now calculate the yield of SO3,

Yield of SO3 = 8.5 mole * 80.06 g / 1 mole = 680.5 grams,

Percent Yield = ( 382 / 680.5 ) * 100 = 56.1 %

Solution = Option A

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

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.