For First order reaction ;
t1/2(half life) = (ln 2)/k
k = ln 2 / t1/2 = (ln2)/3.6min = 0.1925409min-1
Insulin must be replenished in = 1/k time interval
= 1/0.1925409min-1 = 5.194 min
= 5.2 min. (Answer)
5 attempts left Check my work Enter your answer in the provided box. Insulin is a...
2 attempts left Check my work Enter your answer in the provided box. Insulin is a polypeptide hormone released from the pancreas that stimulates fat and muscle to take up glucose. In a certain patient, it has a first-order half-life in the blood of 3.9 min. To maintain an adequate blood concentration of insulin, it must be replenished in a time interval equal to 1/k. How long is the time interval in this patient? min
2 attempts left Check my work Enter your answer in the provided box. Many drugs decompose in blood by a first-order process. Two tablets of aspirin supply 0.60 g of the active compound. After 30 min, this compound reaches a maximum concentration of 2 mg/100 mL of blood. If the half-life for its breakdown is 90 min, what is its concentration (in mg/100 mL) 2.5 h after it reaches its maximum concentration? mg/100 mL
3 attempts left Check my work Enter your answer in the provided box. Calculate the pH of an aqueous solution at 25°C that is 9.3 x 10 Min HI. pH-
3 attempts left Check my work Enter your answer in the provided box. Using the balanced equation for fermentation answer the following question. CH1206(aq) → 2 CH 0(aq) + 2 CO2(g) glucose ethanol How many grams of CO2 are formed from 0.35 mol of glucose? g CO2
3 attempts left Check my work Enter your answer in the provided box. What is the component concentration ratio, [CH CO0 VICH COOHl, of a buffer that has a pH of 5.3902 (K of CH,COOH 1.8 x 10 5)
3 attempts left Check my work Enter your answer in the provided box. Calculate the concentration of HNO, in a solution at 25°C that has a pH of 2.79. (HNO3) -
3 attempts left Check my work Enter your answer in the provided box. The pressure of 5.80 L of an ideal gas in a flexible container is decreased to one-third of its original pressure, and its absolute temperature is decreased by one-half. What is the final volume of the gas?
3 attempts left Check my work Enter your answer in the provided box. Ethylene (CzH.) is the starting material for the preparation of polyethylene. Although typically made during the processing of petroleum, ethylene occurs naturally as a fruit-ripening hormone and as a component of natural gas. The heat of reaction for the combustion of C,H, is –1411 kJ/mol. How many grams of C-H, must burn to give 40.4 kJ of heat?
3 attempts left Check my work Enter your answer in the provided box. ints The pH of a bicarbonate-carbonic acid buffer is 7.06. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-). (Kg, of carbonic acid is 4.2 x 10-7.) eBook [H,C03] [HCO3-] 00 3 attempts left Check my work Enter your answer in the provided box. 01 ints Calculate the pH at the equivalence point in the titration of 50.0 mL...
1 attempts left Check my work Enter your answer in the provided box. For the simple decomposition reaction AB(g) → A(g) + B(g) rate = k[AB] and k = 0.25 L/mol's. How long will it take for [AB] to reach 1/3 of its initial concentration of 1.50 M? + = 8.00 S es