You are asked to prepare 500 ml 0.250 m acetate buffer at ph 5.00 using only pure acetic acid ( mw=60.05 g/mol, pka=4.76), 3.00 m naoh, and water. answer the questions regarding the preparation of the buffer.
1. how many grams of acetic acid will be needed to prepare the 500 ml buffer?
note that the given concentration of acetate refers to the concentration of all acetate species in solution.
Answers: 3
Chemistry, 21.06.2019 18:30, tiwaribianca475
What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?
Answers: 2
Chemistry, 22.06.2019 03:30, babygirl1780
Nanotechnology, the field of trying to build ultrasmall structures one atom at a time, has progressed in recent years. one potential application of nanotechnology is the construction of artificial cells. the simplest cells would probably mimic red blood cells, the body's oxygen transporters. for example, nanocontainers, perhaps constructed of carbon, could be pumped full of oxygen and injected into a person's bloodstream. if the person needed additional oxygen-due to a heart attack perhaps, or for the purpose of space travel-these containers could slowly release oxygen into the blood, allowing tissues that would otherwise die to remain alive. suppose that the nanocontainers were cubic and had an edge length of 24 nanometers. part a part complete what is the volume of one nanocontainer? (ignore the thickness of the nanocontainer's wall.) express your answer using two significant figures. v v = 1.4ă—10â’20 l previous answers correct significant figures feedback: your answer 1.3824â‹…10â’20 = 1.382ă—10â’20 l was either rounded differently or used a different number of significant figures than required for this part. if you need this result for any later calculation in this item, keep all the digits and round as the final step before submitting your answer. part b suppose that each nanocontainer could contain pure oxygen pressurized to a density of 81 g/l . how many grams of oxygen could be contained by each nanocontainer?
Answers: 3
Chemistry, 22.06.2019 14:00, cheyennemitchel238
Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *
Answers: 2
You are asked to prepare 500 ml 0.250 m acetate buffer at ph 5.00 using only pure acetic acid ( mw=6...
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