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A solution containing 28.50mg of an unknown protein per 26.0mL solution has an osmotic pressure of 3.80torr at 35?C. What is the molar mass of the protein?
When making an alcoholic beverage, such as beer and wine, Brix is a measurement used to assess the amount of sugar present in the fermentation matrix or grape juice.
If the formula for magnesium fluoride is MgF 2 and the formula for potassium chlorate is KClO 3 , then what is the formula for magnesium chlorate?
A sample of gas occupies 2.78 x 103 mL at 25oC and 760 mm Hg. What volume will the gas sample occupy at the same temperature and 475 mm Hg?
Determine the V of a voltaic cell (E°cell) if it is required to do 5.43 × 10¯3 Kilo Joule of work when a charge of 2.50 C is transmitted.
Calculate the pH during the titration of 32 mL of 1.149 x 10-1 M NaOH with 1.161 x 10-1 M HBr solution after the following additions of acid.
The world record for the marathon (26.2 miles) is 2:03:38 (hrs:min:s). Assuming constant velocities, calculate the corresponding wavelengths for each runner (be sure to label which is which).
When a 0.528 g sample of a compound containing only carbon, hydrogen, and oxygen is burned, 0.306 g of water and 0.815 g of carbon dioxide are formed. What is the empirical formula for this compound?
How many moles of each ion are in each solution? (a) 2 mol of potassium perchlorate dissolved in water K+ mol ClO4- mol (b) 255 g of magnesium acetate dissolved in water Mg2+ mol C2H3O2- mol
Measuring concentration of acetic acid and other organic acids in an aqueous solution, What analytical method would be employed to measure and determine the concentration of each acid in solution. Would this be a GC/MS analysis
How many products are formed in this reaction? Which of the products are triatomic molecules? How many of the substances involved in this reaction are compounds?
At a particular temperature, K=2.0x10^-6 mol/L for the following reaction: 2CO2 (g) at equilibrium with 2CO(g) + O2 (g) If 2.1 mol CO2 is initially placed into a 4.2 L vessel, calculate the equilibrium concentrations for all of the species.
A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. the combustion of 88.5 mg produced 241 mg of CO2 and 49.2 mg of H2O. the molar mass of the compound was 162 g/mol.
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