Weigh 2.1g of NaHCO3 into 250ml of distilled water, we get solution B. Calculate pH and buffer capacity of solution B. Know that acid H2CO3 has pKa1 = 6.35; pKa2 = 10.33.

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)

What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.

50 points! need answer asap. what type of organic compound contains the following functional group? (2 points)