You record the absorbance of your unknown BSA sample at 0.276. What is the concentration in ug/mL of the unknown assuming you have a standard curve with the line of best fit with y=0.0001x+0.0038 as its equation

A student needs 240 mL of a 1/20 dilution of an undiluted stock solution. What volume (mL) of the stock solution will be required? Note: Your answer should be in numerical format to the nearest whole number (with a decimal).

It takes 175ml of 0.75 M H2SO4   to completely neutralize 285 ml of NaOH.  What is the concentration of the NaOH solution?

The standard curve provided below will allow you to answer the remaining questions. Generic Standard Curve 0.7 y = 0.9425x- 0.0034 0.6 0.5 0.4 0.3 02 0.1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Concentration (mg/ml) - Please describe two ways in which you could use this standard curve to determine the concentration of a pigment in an unknown sample.| #1: #2: -What is your rough estimation of the concentration if you determine the absorbance of a sample is 0.150? Absorbance

An order was received for 750 mL of 7.5% dextrose solution using 5% D5W and 20% D20W.  How many parts of each dextrose solution is needed?(round answers to the nearest tenth)

You have on hand Atarax 10mg / 5 * ml The order is for Atarax 25mg. How many ml will you give?

Plot a line weaver-burk graph for Km=6.30mM and Vmax=360uM/min when an experiment has 5 tubes with concentrations of substrates of 1.0mM, 10mM, 50mM, and 100mM.

Consider a pH titration curve at 298 K for 50 mL of 0.10 M hypobromous acid, HBrO (Ka = 2.8 x 10−9), titrated with 0.10 M KOH solution. a. What volume of KOH is needed to reach the half-equivalence point? b. Calculate the pH of the HBrO sample at the half-equivalence point. c. Calculate the equivalence point pH.  d. Identify a satisfactory pH indicator for the equivalence point. The pH range of colour change is indicated in parentheses. A) Methyl orange (3.0 - 4.3)  B) Bromocresol purple (5.0 - 6.5)  C) Alizarin yellow R (10.0 - 12.0)  D) Methyl red (4.2 - 6.2)

Using the data from the standard curve done previously, you record the absorbance of your extracted milk protein sample at 0.499 at 540nm. What is the mass of the protein in mg assuming you collected 10mL worth of the protein? Your standard curve should have a line of best fit with the equation y=0.0001x+0.0038.

The equation describing the linear relationship between hemoglobin concentration and absorbance at 520 nm is y=0.0523x+0.011. If the absorbance value is 0.6, calculate the % hemoglobin in whole blood.