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Yogita Ingle 6 years, 6 months ago
In microbiology, central Dogma illustrates the flow of genetic information from DNA to RNA to protein. In simple it is defined as a process in which the information in DNA is converted into a functional product. It is suggested that the information present in a DNA are essential to make up all proteins and RNA act as a messenger that carries information through the ribosomes.
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Gaurav Seth 6 years, 6 months ago
Mathematical form:
The internal energy of the system can be changed in two ways:
(i) by allowing heat to flow into the system or out of the system,
(ii) by work is done on the system or work done by the system.
Let us consider a system which undergoes a change from one state to another. Let the initial internal energy of the system be U1. Now if a system is supplied q amount of heat, then internal energy of the system increases and becomes U1 + q.
If work (w) is done on the system, then its internal energy further increases and becomes U2. The energy U2 is the energy in the final state.

The above expression is the mathematical form of the first law of thermodynamics. w includes all kinds of work such as pressure-volume work, electrical work etc.
If the work is done in the above process is only pressure-volume work,

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Sia ? 6 years, 6 months ago
Aristotle (384-322 BCE) is known as the father of political science.
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Sia ? 6 years, 6 months ago
Hydrogen peroxide, (H2O2), a colourless liquid usually produced as aqueous solutions of various strengths, used principally for bleaching cotton and other textiles and wood pulp, in the manufacture of other chemicals, as a rocket propellant, and for cosmetic and medicinal purposes.
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A cell is the structural and fundamental unit of life. The study of cells from its basic structure to the functions of every cell organelle is called Cell Biology. Robert Hooke was the first Biologist who discovered cells.
All organisms are made up of cells. They may be made up of a single cell (unicellular), or many cells (multicellular). Mycoplasmas are the smallest known cells. Cells are the building blocks of all living beings. They provide structure to the body and convert the nutrients taken from the food into energy.
Posted by Goswami Anjali 6 years, 6 months ago
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Gaurav Seth 6 years, 6 months ago
Concentrated nitric acid used in laboratory work is 68% nitric acid by mass in an aqueous solution. This means that 68 g of nitric acid is dissolved in 100 g of the solution.
Molar mass of nitric acid (HNO3) = 1 × 1 + 1 × 14 + 3 × 16 = 63 g mol - 1
Then, number of moles of HNO3 = 68 / 63 mol
= 1.08 mol
Also density = 1.504g/mL-1 (given)
Therefore from the formula density = mass / volume,we get
Volume of solution = 1000/1.504 = 66.49 mL
Therefore molarity of nitric acid = (1.08/66.49) x 1000 = 16.24 M
Posted by Ranjith Good 6 years, 6 months ago
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Gursharn Kaur 6 years, 6 months ago

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Ritesh Kumar 6 years, 6 months ago
1Thank You