Topic :: Chemical Formula





Chemical Formula Interview Questions
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BIOCHEMICAL ENGINEERING INSTRUMENTATION - EXAMPLE 29.4 : The resolution of separation, Rs for chromatography is given by the formula Rs = (difference in retention time) / (average width at the base). In a chromatogram, 3 peaks a, b and c are found. Average widths W at the bases of the solutes are : Wa = 20 s, Wb = 40 s, Wc = 30 s. Resolutions of separation, Rs for solutes b and c in comparison to a are 2 and 4 respectively. The differences in retention times T for b and c in comparison to a are (Tb - Ta) and (Tc - Ta), Ta = Tc - Tb : (a) Form 2 equations involving Rs as a function of Wa, Wb, Wc, Ta, Tb and Tc. (b) Find the values of Ta, Tb and Tc.

1 1696

BIOCHEMICAL ENGINEERING INSTRUMENTATION - EXAMPLE 29.5 : The following formula is used as a reference : (analyte signal) / (internal standard signal) = (f-factor) x (concentration of analyte) / (concentration of internal standard). A solution containing 3 mM of analyte and 4 mM of internal standard gave peak signals of 2 and 3 mamps respectively. Another similar solution containing 2 mM of analyte and 1 mM of internal standard gave peak signals of 1 and 4 mamps respectively. Find the average f-factor.

1 1534

ACCOUNTING AND FINANCIAL ENGINEERING - EXAMPLE 34.18 : An investor is planning to purchase a small office for biochemical engineering consultancy on loan. In the calculation of the discount of payment in arrears, the following formula is used : y = 1 / (1 + r) ^ 1 + 1 / (1 + r) ^ 2 + 1 / (1 + r) ^ 3 + ... + 1 / (1 + r) ^ n where y = present value, r = interest rate of discount, n = number of payment, ^ = power used in certain computer languages for mathematics. (a) What is the meaning of : arrears? (b) Find a mathematical equation of y (1 + r). (c) Calculate, in less than 3 terms, y as a function of r and n.

1 1456

ACCOUNTING AND FINANCIAL ENGINEERING - EXAMPLE 34.37 : A biochemical engineering professional applies 5-step Du Pont formula in the accounting. Let Net Income = A, Earning Before Tax (EBT) = B, Earning Before Interest, Tax (EBIT) = C, Net Sales = D, Total Assets = E, Shareholders Equity = F. Let Tax Burden = A / B = 0.75, Interest Burden = B / C = 1.05, EBIT Margin = C / D = 0.27, Asset Turnover = D / E = 0.66, Return on Equity = A / F = 0.37. (a) Calculate the value of Leverage = E / F. (b) If AB + BC + CD + DE + EF = $$ 141932, find the values of A, B, C, D, E and F.

1 1683

Give the chemical formula of Garnet?

792

Give the chemical formula for Borax?

695

What is the Chemical formula for Epsom salt?

722

give the formula of borax. Borax is chemically called as.

743

Garnet is the ore of which element. Give its chemical formula.

720

Write the chemical formula for epsom salts?

733

What is the chemical formula of alum?

672

What is the chemical formula of xylose?

786

What is xylose? What is its chemical formula?

742

What is chemical formula for borax?

669

what is chemical formula for glass?

687




Un-Answered Questions { Chemical Formula }

Give the chemical formula of Garnet?

792


Give the chemical formula for Borax?

695


What is the Chemical formula for Epsom salt?

722


Garnet is the ore of which element. Give its chemical formula.

720


Write the chemical formula for epsom salts?

733






What is the chemical formula of alum?

672


What is the chemical formula of xylose?

786


What is xylose? What is its chemical formula?

742


What is chemical formula for borax?

669


what is chemical formula for glass?

687


What is the chemical formula for dichromate?

708


What is the chemical formula of detergent?

691


What is the chemical formula for epsom salts?

714


Explain what is the chemical formula of detergent?

640


Explain the chemical formula for dichromate?

704