Recent questions in Biology & Chemistry

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Allicin is the compound responsible for the characteristic smell of garlic. An analysis of the compounds gives the following percent composition by mass: C:44.4 %, H:6.21 %, S:39.5%, O:9.86 %. Calculate its emprical formula. What is its molecular formula given that its molar mass is about 162 g?

Allicin is the compound responsible for the characteristic smell of garlic. An analysis of the compounds gives the following percent composition by mass: C:44.4 %, H:6.21 %, S:39.5%, O:9.86 %. ...
15/10/2017

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Urea [(NH2)2CO] is used for fertilizer and many other things. Calculate the number of N,C,H and O atoms in 1.68x104 g urea. (check the mass number from periodic table for each element) ?

How do it ? Urea [(NH2)2CO] is used for fertilizer and many other things. Calculate the number of N,C,H and O atoms in 1.68x104 g urea. (check the mass number from periodic table for each element) ...
15/10/2017

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. The atomic masses of 36Li and 37Li are 6.0151 u and 7.0160 u, respectively. (u= SI symbol of atomic mass unit). Calculate the natural abundances of these two isotopes. The avarage atomic mass of Li is 6.941 u

. The atomic masses of 36Li and 37Li are 6.0151 u and 7.0160 u, respectively. (u= SI symbol of atomic mass unit). Calculate the natural abundances of these two isotopes. The avarage atomic mass of ...
15/10/2017

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Nitrogen atom to purine and promising is provided by

Nitrogen atom to purine and pyrimidine is provided by
07/10/2017

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The life function of transport in an organism directly involves those activities used to?

the life function or transport in an organism directly involves those activities to do?
06/10/2017

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What is lethargy

What is lethargy
05/10/2017

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Query about corn

The sugar in corn is rapidly converted to starch after the corn has been picked. After picking, corn with the sh2 gene was found to have more sugar and less starch than corn without this gene., ...
05/10/2017

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Why trptophane has highest absorbance in UV

why trptophane has highest absorbance in UV
04/10/2017

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Restriction endonucleases type II :

Are DNA dependent polymeraseAre obtained from virusCut double strand DNA from any sourcesCatalyzing labeling of the sourceAll of the above is correct
24/09/2017