- Why is -sin(pi/4) = 1/sqrt(2) when sin(pi/4) = sqrt(2)/2?

Discover Questions

Which planets lie on the ecliptic & what does this say about the tilt of the planets' orbit relative to each other? 0.5 mL of toluene react with 1.0 mL of 1 M solution of bromine in CH2Cl2. Calculate the number of mols of each reagent (bromine and toluene)? Which is greater 2/2 or 5/4? What's the concentration of Na ions in a solution made by diluting 20.0 mL of a 0.674 M solution of Na sulfide to a total volume of 200 mL? What volume of 0.02 M EDTA solution, in mL, is needed to completely complex all of the Zn2+ in 25.00mL of the 0.8 M zinc solution?