Question

. A baseball pitcher throws a pitch horizontally clocked at 35 m/s. Assuming air friction is negligible (which is often not a good assumption in baseball), how far will the ball have dropped by the time it crosses home plate 18.3 m away?

Answer 1

a first one is not chemistry question. The percentage of each enantiomer present (b) is 50 % a show any specific This mixture would not rotation , ee=80% and s-isomer is excess means, pure 80% s-isomer is present & the 20% remain in recemic mixture of R & s-isomers. ou 100% pure s- ibuprofen shows specific rotation +57° Now, so, 80% pure s-isomer will show specific rotation = +57 x 80 100 --+45.6°

457° sp. rotation is shown by 100% s-isomer .: +34-2° sp. rotation will be shown by (100 x 34.2), 57 = 60% s-isomer as so, 60% pure enantiomeric s-isomer is present excess (ee). the recemic mixture of Rest 40% is Ras-isomer. so total s-isomer present a (60 + 40% 2 - 80% and total R iomer present a (100-80% = 20%.