Question 5 of 21> An aqueous solution at 25 C is 13.9% HNO, by mass and has a density of 1.053 g/ml. What is the pH of the solution? pH =

A rectangular solid has the following dimensions: length = 7.12 cm %3D width = 3.31 cm %3D height = 1.05 cm %3D Its mass is 14.4523g. The number of significant figure in the calculated density of the solic is Select one: а. 6 b. 3 С. 4 O d. either 3 or 4 e. 2

Number 9

Mass of beaker and milk= 65.922 g Mass of beaker= 45.347 g  Mass of milk (g)?   pH of milk= 8 Isoelectric point= 5 Mass of watch glass and casein= 28.438 g Mass of watch glass= 27.832 g Mass of casein (g)? Percent casein in milk?

Both 6 & 7

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