You have 100ml of 1M Glycine (total Glycine) and you want to make a buffer at pH = 3.2. Assuming normal pKa values for amino acids, which functional group would be relevant for this buffer, and how much Glycine in the unprotonated versus protonated state would you need? (HINT: what is the ratio of unprotonated versus protonated at pH = 3.2?)
a. Amine, 9mM B / 91mM BH+b. Amine, 91 mM B / 9mM BH+c. Acid, 9mM A- / 91mM HAd. Acid, 91mM A- / 9mM HA

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

What are the first three quantum numbers for the electrons located in subshell 2s?

A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml