Compute the percentage of protein in the flour

Reference no: EM13276438

A 0.9092-g sample of wheat flour was analyzed by the Kjeldahl procedure. The ammonia formed was distilled into 50.00mL of 0.05063 M HCl; a 7.46-mL back-titration with 0.04917 M NaOH was required. Calculate the percentage of protein in the flour.

Reference no: EM13276438

Questions Cloud

Estimate the tension in the cord : A sphere of mass 3.00 g is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes a constant angle of 28.0Â° with the vertical. Determine the tension in the cord

Explain how many ml of hcl will be used : If you use 25.0 mL of the 0.24M sodium hydroxide solution to titrate a 0.40 M solution, how many mL of HCl will be used

Compute her resultant displacement : A girl delivering newspapers covers her route by traveling 10.00 blocks west, 4.00 blocks north, What is her resultant displacement

Compute the composition of the mixture : A second 25.00-mL aliquot was then treated with an excess of BaCl2 and 25.00 mL of the base; precipitation of all the carbonate resulted, and 7.63 mL of the HCl was required to titrate the excess base. Calculate the composition of the mixture.

Compute the percentage of protein in the flour : A 0.9092-g sample of wheat flour was analyzed by the Kjeldahl procedure. The ammonia formed was distilled into 50.00mL of 0.05063 M HCl; a 7.46-mL back-titration with 0.04917 M NaOH was required. Calculate the percentage of protein in the flour.

Find the velocity of second glider after the collision : On an air track, a 402.0g glider moving to the right at 2.25m/s collides elastically with a 498.0g glider moving in the opposite direction at 2.90m/s. Find the velocity of second glider after the collision

Explain what is the value of the rate constant at 15 : Determine the activation barrier for the reaction. What is the value of the rate constant at 15

What is the mechanical energy lost due to friction : A sledge loaded with bricks has a total mass of 17.9 kg and is pulled at constant speed by a rope inclined at 20.3° above the horizontal. What is the mechanical energy lost due to friction

Explain na2co3 starting with the solid solute : Describe how you would prepare each of the following aqueous solutions. - 230 g of a solution that is 0.60 molal in Na2CO3 starting with the solid solute.

User Account

All Pages