How many grams of dry NH4Cl need to be added to 2. 00 L of a 0. 100 mol Lâ’1 solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8. 56? Kb for ammonia is 1. 8Ă—10â’5.

Which type of bond is present in hydrogen sulfide (h2s)? the table of electronegativities is given. a. hydrogen b. ionic c. nonpolar covalent d. polar covalent

What is the correct term for living the most sustainable life you can within your current circumstances?

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.