Cholesterol is a compound suspected of causing hardening of the arteries. The formula of cholesterol is C27H46O. a. A sample of cholesterol is isolated from the arterial lining of a 60-year-old American male. What is the formula of this compound? b. Cholesterol is extracted from a chicken’s egg. What is the formula of this compound?

3178

Q1. Why did you enter the field of chemistry? Q2. What has motivated you to take chemistry as your professional subject and have you motivated anyone towards your field?

2294

What is the role of stannous chloride?

1381

What is shaking level in GC?

792

what is mean by dissolution hydrodynamics?

826

Give the principle of potentiometer titration.

1035

Explain what is an oxidizing agent?

1064

Mention a few advantages of photoelectric colorimetric determination.

1383

I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?

3540

Tell me something about Vitamin A test method by HPLC

2679

if content uniformity passing but dissolution varrying then what is next step?

878

what is mean by nitrosamine impurities?

1069

how much mass should be there in volumetric flask while in preparation of sample for assay? 

2580

What is the number of protons in an atom?

1057

What is difference between LVT and RVT Viscometer?

7100