Madalyn

State the doman and range of the relation y= Arc tan x Domain: All real numbers Range= -pi/2 < y < pi/2

State the amplitude, period, and phase shift of the function y=-3cos(3x+ (3pi/2)) Amplitude: 3 Period: 2pi/3 Phase Shift: -pi/2 Am I right?

Given the equation 2SO2(g) +O2(g) -> 2SO3(g), H = -197.8 kJ per Mole, find the quantity of heat transferred when 8.54 grams of sulfur dioxide react completely. I'm stuck. Please help >-<

Haha, okay, but since it's a multiple choice question and that's the only choice...I think I'll go with that for now.

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