Question 2 Solution 1: 2 mL of 1.50 M A is combined with 18 mL water. Solution 2: 5 mL of solution 1 is combined with 35 mL water. Calculate [A] in solution 2. Round your answer to 3 sig figs. 0.751 Question 3
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- A second spectrophotometric method for the quantitative analysis of Pb2+ in blood yields an Ssamp of 0.712 for a 5.00 mL sample of blood. After spiking the blood sample with 5.00 μL of a 1560 ppb Pb2+ external standard, an Sspike of 1.546 is measured. What is the concentration of Pb2+ in the original sample of blood?A spectrophotometric method for the quantitative determination of the concentration ofPb2+ in blood yields an Ssamp of 0.133 for a 1 mL sample of blood that has been diluted to 6 mL. A second sample is spiked with 1 µL of a 1467 ppb Pb2+ standard and diluted to 6 mL, yielding an Sspike of 0.491. Determine the concentration of Pb2+ in the original sample of blood.Calculate the estimated O2 cost of horizontal treadmill running (ml · kg−1 · min−1) for a 70-kg subject at 150, 200, and 235 m · min−1.
- A standard of solution was put through appropriate dilutions to give the concentrations of glucose (mM) shown in the accompanying table. The absorbances in the table (1.00-cm cells) were recorded at 490 m table. Use the method of least squares to find an equation relating absorbance and the concentration of glucose.Module Code & Title: CHM9011M Chromatography and Sep Sciences Section 1: Purpose Clarity of Purpose ): Clearly states the purpose of the SOP. Relevance to Task : Demonstrates the importance and relevance of the procedure. Alignment with Goals ): Shows how the procedure aligns with organisational goals.An active ingredient has a relative molecular mass of 498. What mass of this active ingredient is required to make up 345 cm3 of a solution with a concentration of 0.03 mol dm−3? Give your answer in grams and approximate to 2dp:
- A 60-year-old woman who weighs 75kg requires a loading dose of an antibiotic to treat an infection. A plasma concentration of 4.5 mg/L of the antibiotic needs to be achieved for optimal therapeutic effectiveness. The volume of distribution (Vd) of this antibiotic is 0.2 L/kg. The salt factor (S) is 0.6 and bioavailability fraction (F) is 1. The antibiotic is available as a 100 mg/mL infusion.Loading dose = Amount of drug in the bodyBioavailability (F) x Salt fraction (S)Amount of drug in the body = Target conc. (C) x Volume of distribution (Vd)How many millilitres of antibiotic infusion need to be administered?State your answer to 1 decimal place.unit- mlI don't understand how you calculated the w1/2 for part c... where did the 5.54 come from? And can you answer the last part of the question-> d) If the volume ratio of the stationary phase to mobile phase is 0.25, find the distribution constant for compound 1.1.How many milliliters of 100 % (w/v) ethanol are equal to 0.57 millimoles (mmole)? (Hint: It is not 57 ml.) 2. What is the molar concentration, millimolar (mM) concentration, and micromolar (µM) concentration when 3 micromoles (µmoles) of glycine are diluted to a final volume of 6 L? 3. If the percent transmittance of a colored solution is found to be 35%, what amount of distilled water must be added to 100 ml of this solution in order to have a solution with a percent transmittance of 75%.
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