Assuming that the proximal histidine has a pKapKa of 6.00,6.00, you can use the Henderson–Hasselbalch equation to determine that the ratio of deprotonated to protonated histidines would be approximately 25:125:1 at a biological pHpH of 7.40.7.40. pH=pKa+log([A−][HA]) pH=pKa+log([A−][HA]) What would the ratio of deprotonated to protonated histidines be if the pHpH decreased to 6.40?

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.

Arectangle has a diagonal 20 inches long that forms angles of 60 and 30 with the sides. find the perimeter of the rectangle. for geometry