A dose of 5 milligrams of penicillin is administered to a patient. The absorption constant for penicillin is 11% per hour and its minimum effective concentration is 2 milligrams. Use the formula C= Coe^kt. a). What amount of penicillin is present in this patient’s body at 30 minutes? Round your answer to one decimal place.  b).When should another dose of penicillin be administered to this patient in order to maintain the minimum effective concentration? Round your answer to one decimal place.

24 25 26 A chemistry student weighs out 0.0202 g of acrylic acid (HCH,CHCO,) into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1800M NAOH solution. Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Round your answer to 3 significant digits. mL x10 Continue Submit Assignment 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center | Accessibility C 80 000 000 F1 F2 DII DD F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 @ 2$4 % &

1. The toxicity of mercury depends greatly upon the formulation of the metal. Which of them (elemental, metal ion, or methyl-mercury) is more likely to be absorbed through the skin? Explain your answer.

How does magnesium hydroxide provide relief for indigestion? Pick from the following • Magnesium hydroxide is an acid that digests food in the stomach. • Magnesium hydroxide produces magnesium chloride salt, which neutralizes HCI. • Magnesium hydroxide reacts with HCI to produce a solution that is neutral. • Magnesium hydroxide is an acid that neutralizes HCI in the stomach.

A student calibrated a eudiometer by first recording the mass of the empty eudiometer followed by filling the eudiometer to the 50.00 mL line with deionized water at 22°C and recorded the mass. The mass of water was 49.012 g. In an experiment run at 22°C, a reading from the eudiometer of 46.78 mL corresponds to what true volume?

You have a 11.5 mg sample of blood that contains various proteins. Hemoglobin is the only protein in the sample containing Fe. Hemoglobin contains 3.83% by mass of a compound called heme (C₃₄H₃₂FeN₄O₄, MW = 616.49 g/mol). You find that your 11.5 mg blood sample contains 34.9 micrograms of Fe. What is the mass percent of hemoglobin in your protein sample?   -don't prematureley round