A 1.143 g sample contains only vitamin C (C,H,O,) and sucralose (C,H19CI,O,). When the sample is dissolved in water to a total volume of 31.7 mL, the osmotic pressure of the solution is 3.91 atm at 285 K. What is the mass percent of vitamin C and sucralose in the sample?

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.

Refer to the following titration curve below: 13 12 11 10 7 5 4 3 2 8 10 12 14 16 18 20 22 24 26 28 30 Volume of Titrant / mL Unknown Acid 0.10 mol/L - titrant = NaOH 0.1 mol/L How many buffering regions are present in the titration curve of the amino acid?

Buffer systems can absorb hydrogen ions from the blood to increase pH into homeostatic range (pH: 7.35 to 7.45)During what condition would buffer systems do this?

Calculate the unknown concentration of the PROTEIN C with an absorbance value of A412 given the standard curve indicated in the table below. Write your final answer (NUMBER ONLY) in two decimal places rounded off. Protein concentration (µg/mL) 0 0.02 0.04 0.06 0.08 0.10 Your answer APIENT Absorbance 0.000 0.161 0.284 0.438 0.572 0.762

Carbon monoxide gas is dissolved in water at 25 \deg C and 0.065 atm. If the constant for this system is 5.80 x 104 M/atm, what is the solubility of CO? Answer the number to the wholest number

Complete the following table, which lists information about the measured acid dissociation constants of three unknown weak acids. Note: be sure each number you put in the table has the correct number of significant digits. acid K Κα PK relative strength a a ☐ x10 A B C 1.2 × 10 3. 10 4 ☐ 11.539 ×

A 1500 mL bag of 0.9% NaCl needs to have 9 grams of vancomycin added. How much water should the vancomycin be dissolved in prior to addition to ensure the resulting solution is isotonic with plasma? (SCE 0.06)

3. a) An aqueous solution is 3.50% by mass potassium bromide, KBr, and has a density of 1.02 g/mL. The molality of potassium bromide in the solution is _________m. b)An aqueous solution of magnesium nitrate has a concentration of 0.474 molal. The percent by mass of magnesium nitrate in the solution is _________%. c)An aqueous solution of cobalt(II) bromide has a concentration of 0.153 molal. The percent by mass of cobalt(II) bromide in the solution is _________%.

A solution is made by dissolving 0.641 mol of nonelectrolyte solute in 763 g of benzene. Calculate the freezing point, T;, and boiling point, Tp, of the solution. Constants can be found in the table of colligative constants. %3D °C Tp = °C