If lake ontario were as cold as a continental arctic air mass that flowed over it, the lake effect snow a.would be very strong b.would be very weak c.would occur as normal

Option (B)

Explanation:

Lake effect snow generally occurs when the cold winds extracts the water content (moisture) from the relatively warmer lakes and carries further and precipitates back on the land areas in the form of snow. Much of the snow is originated from the lake Ontario and it deposits on the nearby terrestrial areas.

So, when the Lake Ontario is cold enough like the air mass that blows in the continental arctic, then it indicates that the lake effect snow would be comparatively very much weak.

Thus, the correct answer is option (B).

No. of moles of methane = 18.9 mol

Explanation:

No. of moles = Volume of gas / Volume of gas (at STP)

Volume of gas at STP (Standard Temperature and Pressure) = 22.4L

N = 425 / 22.4

N = 18.973

∴No. of moles of methane = 18.9 mol