Tuesday, August 31, 2010

reversible reactions

Let us learn about reversible reactions

A reversible reaction is a chemical reaction which results in an equilibrium mixture of reactants and products

Real reactions are more complex.

The equilibrium position is governed by the intrinsic rates of the forward reactions & back reactions. As there is usually more than 1 reactant & product their proportions can vary. Temperature affects the equilibrium position. The Equilibrium mixtures simulation allows us to investigate the effect of changing the initial concentrations of reactant & products & the temperature on some important reversible reactions.

In our next blog we shall learn about law of conservation of momentum I hope the above explanation was useful.Keep reading and leave your comments.


Monday, August 30, 2010

tundra animals


Let us learn about tundra animals

Tundra is described as a place where levels of subsoil beneath the surface of the earth are permanently frozen. This soil is called as permafrost. The level of earth above the permafrost will melt (thaw) in the short summer consenting plants to grow. This level will then freeze again in the winter & most of the plants will go latent. The permafrost makes it difficult or impossible for trees to root down into the ground it is 1 of the characteristics of tundra is that it is often treeless and the land appears barren

Animals that live in the tundra region have special adaptations that allow them to survive the extreme temperatures & conditions that are present in tundra. The best example of an animal with special adaptations is the “Arctic Fox”. The Arctic Fox has short ears & a short, round body with a thick coat to minimize the amount of skin exposed to the frigid air. There is a less amount of biodiversity in the tundra therefore fluctuations in 1 animal population will effect populations in another. The best example of this would be that if in a certain year there is a lower amount of Lemmings than usual, hence the population of Snowy Owls, who feed mostly on Lemmings, will also decrease


In our next blog we shall learn about balance chemical equations calculator I hope the above explanation was useful.Keep reading and leave your comments.

Sunday, August 29, 2010

Free physics help

Hi Friends!!!

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In Free physics help, Physics programs are designed to help you get the desired edge in acing this fascinating subject. Online physics help have Physics tutors who have many years of experience tutoring Physics for beginners as well as higher grade students. Whatever your requirements are, the rigor & discipline of the online physics help tutor certification program will give you all that you want and more in your tutor. Online physics help, Physics tutors are familiar with National & State Standards required across grades in the US.

In our next blog we shall learn about Free chemistry help I hope the above explanation was useful.Keep reading and leave your comments.


Friday, August 27, 2010

functions of carbohydrates

Let us learn about functions of carbohydrates

Carbohydrates play important role in promoting our health fitness. Carbohydrates form a major part of our food & help a great deal in building our body strength, by generating energy. In fact, Carbohydrates are 1 among the 3 prominent macronutrients that serve as excellent energy providers, the other 2 being fats & proteins. Carbs intake can take place in different forms like starch, fibers, sugar etc.


The functions of carbohydrates are multiple & it is owing to this fact that it becomes all the more necessary to incorporate carbohydrates in our meal. For instant energy generation, starch & sugars act as the perfect fuel that enable we to carry out our physical activities efficiently & effectively. Fiber does wonders in keeping our bowel function going smooth.

Talking about the importance of carbohydrates, apart from its benefits, there is also an added advantage of carbs consumption & that is that carbs are found in different foods, which if eaten, also pave way for consuming other essential nutrients. hence, it is preferable to go in for distinctive carbohydrate food sources.

Carbohydrates add on to the taste & appearance of food item, thus making the dish tempting & mouthwatering. Carbohydrates are sometimes used as flavors & sweeteners. Carbs aid in regulating blood glucose & also do well to our body by breaking down fatty acids, thus preventing ketosis. Therefore, eat plenty of foods that are rich sources of carbs, but it is recommended to go in for natural slow digesting carbs

In our next blog we shall learn about abiotic factors I hope the above explanation was useful.Keep reading and leave your comments.

Thursday, August 26, 2010

line plot worksheets

Let us learn about line plot worksheets

Line plot worksheet is a graph which shows frequency of data along a number line. line plot worksheet is best to use a line plot when comparing fewer then 25 numbers. Line

  • line plot worksheets is defined as a graph which shows frequency of data along a number line. Line plot worksheet is best to use a line plot when comparing fewer numbers.
  • line plot worksheets shows data on a number line with the symbol x or other marks to show frequency.
  • In the applications of line plot worksheets, we have also created the scatter plot analysis. I we go in the wrong path or plotting the extra values or the wrong path or plotting the extra values or plotting the values in different place or leaving some values when we plotting make great difference in the diagrams.

In our next blog we shall learn about line plot example I hope the above explanation was useful.Keep reading and leave your comments.


Wednesday, August 25, 2010

translatory

Let us learn about translatory

Movement or Motion is of several types. The best example, we have different types of motion like rotatory motion, translatory motion, oscillatory motion, etc. Translatory motion occurs when an object moves from 1 point to another in space. The object is displaced from its unique position. The motion may be in a straight line, or along a curve line.

To define a particle undergoing translatory motion, you use linear or translational kinematics. Translational kinematics defines the motion of a point in space along a line or path. The path is called the trajectory. If the trajectory path is straight, it is called as rectilinear motion. In case the path is curved, we call it curvilinear motion. Inspite we use the motion of a point to illustrate concepts in translational kinematics, the results are always useful for real-world, macroscopic objects also.

In our next blog we shall learn about monocot root I hope the above explanation was useful.Keep reading and leave your comments.

Tuesday, August 24, 2010

online physics help

Let us learn about a homogeneous mixture

A homogeneous mixture is a composition of 2 or more pure substances in a definite proportion, displaying uniform characteristics. Homogeneous mixtures do not exhibit a sharp melting point since they melt at different temperatures.


A mixture exhibits the characteristic properties of the substances it is made of. The composition of a mixture is wide-range by altering the proportions of its constituents. A mixture can also be segregated into its constituents by mechanical means or physical. Once u separate, the individual properties of the substances are retained.

A mixture is classified into 2 basic types:

  • Homogeneous Mixture
  • Heterogeneous Mixture

A substance which is uniform in composition is said to be as homogeneous in Chemistry. Any combination of substances which has uniform composition & properties. a mixture that is uniform throughout.



In our next blog we shall learn about a heterogeneous mixture I hope the above explanation was useful.Keep reading and leave your comments.

Monday, August 23, 2010

types of natural resources

Let us learn about natural resources & types of natural resources.

The word resource is defined as the materials available in large quantities & held in reserve for future use. If these type of resources occur in nature, they are called natural resources. Natural resources are naturally occurring resources in the world which have not been disturbed by mankind. By resource is meant any physical entity that has limited availability. These resources occur in natural form.


1) Inexhaustible Natural Resource & 2) Exhaustible Natural Resource are the 2 types of types of natural resources


The natural resources are classified in 3 different ways, on the basis of their

a) chemical nature

b) their abundances and availability

c) their distribution.

In our next blog we shall learn about born haber cycle I hope the above explanation was useful.Keep reading and leave your comments.



Sunday, August 22, 2010

carbanion


Let us learn about carbanion

A species which contains a carbon atom carrying a negative charge is said to be as carbanion. Carbanions are generated by the heterolytic fission of covalent bond involving carbon atom, where the atom linked to carbon goes away without the bonding electrons. This causes the carbon to acquire a negative charge. The best example, discharge of hydrogen of methyl part of acetaldehyde molecule as H+ ion leaving both the electrons on carbon.


An anion in which carbons carry a negative charge & an unshared pair of electrons is called as carbanion.


In our next blog we shall learn about equilibrium reactions I hope the above explanation was useful.Keep reading and leave your comments.


Friday, August 20, 2010

d cell battery


Let us learn about d cell battery

without battery you can't use cartoon phone.

D cell battery converts chemical energy into electrical energy thus maintaining a constant difference of charge between any two points.


It is used in the computer, in mobile phones, in laptops, in torch light and in UPS


In our next blog we shall learn about magnesium acetate I hope the above explanation was useful.Keep reading and leave your comments.

Thursday, August 19, 2010

dilute solution

Let us learn about dilute solution

Dilute solution is an unsaturated solution which contains comparatively small quantity of the solute, compared to what it can dissolve at that temperature.

1) What is the molar concentration of pure water?

Ans: Molar concentration = No. of moles /

Volume of solution in litres

Density of water = 1g/ml

= 1g/10-3l

Mass of 1 litre of water = mass of 1000ml of water

= volume X density

= 1000ml X 1g/ml

= 1000g

Moles of water = 1000g/18

=55.55moles

Molarity of water = 55.55 M

2) 150 ml of water is added to 200ml of 0.02 M HCl. Calculate the molar concentration of the resulting solution.

Ans: First we calculate number of moles of HCl in 200ml solution.

In 1000ml of solution no. of moles of HCl is 0.02 M

In 200ml of solution no. of moles of HCl is?

= [0.02 X 200]/ 1000

= 4 X10-3

Total volume of water and HCl = 150 + 200 ml

= 350ml

No. of moles of HCl in 350ml = 4 X10-3

Therefore molar concentration of 350 ml solution = [4 X 10-3 ]/

[350 X 10-3]

= 0.0114 M

In our next blog we shall learn how to answer biochemical test I hope the above explanation was useful.Keep reading and leave your comments.

Wednesday, August 18, 2010

law of conservation of momentum


Let us learn about law of conservation of momentum

Law of conservation of momentum stats that when any two bodies act upon another body, their total momentum remains constant provided no external forces are acting. That means whenever one body gains momentum, then some other body lose an equal amount of momentum, that is, momentum is never destroyed nor created. Therefore, law of conservation of momentum is also known as principle of conservation of momentum.


What is the equation for momentum?

Ï„ = ▲L/▲t here, angular momentum of the body is represented as L.

If Ï„ = 0, ▲L/▲t = 0 or ▲L = 0 or L = constant that is if r= 0, L = constant.

In our next blog we shall learn about monocot root I hope the above explanation was useful.Keep reading and leave your comments.

Tuesday, August 17, 2010

general knowledge questions and answers

Hi Friends!!!

Have you maintained any general knowledge questions and answers books? Maintaining such books is a good habit.

Now let us learn What is mixture?

A MIXTURE is a combination (made up) of two or more substances that are not chemically combined and do not survive in fast proportions to each otherwise. Most unprocessed substances are mixtures.

A Mixture can be physically separated into unadulterated compounds or elements.

Mixtures may show a dynamical set of material properties.

For model, a mixture of alcohol & water boils over a range of temperatures. weapon of intoxicant and liquid boils over a reach of temperatures.

I hope the above explanation was useful.Keep reading and leave your comments.

Monday, August 16, 2010

depletion of natural resources

Let us know the main reason for depletion of natural resources.

Use of either of these forms of resources beyond their rate of replacement is considered to be natural resource depletion.


  • Over-consumption/excessive or supererogatory use of resources
  • Non-equitable system of resources
  • Overpopulation
  • Slash and ruin agricultural practices, currently occurring in umteen developing countries
  • Technological and unskilled process
  • Erosion
  • Irrigation
  • Mining for oil and minerals
  • drainage of wetlands
In our next blog we shall learn about balmer series I hope the above explanation was useful.Keep reading and leave your comments.



Sunday, August 15, 2010

optical isomers

Let us learn about optical isomers

Optical isomers are compound which change all the dance corresponding but one isomer leave circumvolve the planer polarized inflamed to sinistral that is leveorotatory and the added isomer module rotate the cut polarized sunlit to the sect that is dextrorotatory. The consequential stipulation for a nonsynthetic molecule to be optical fertiliser increase is non superimpossible on the mirror individual. Specified non superimpossible mirror images constitutes an enatiomers.

Optical isomers are titled equivalent this because of their symptom on planer polarised light.

Optical isomerism is a taxon of stereoisomerism. This diplomatist explains what stereoisomers are and how you distinguish the theory of optical isomers in a stuff.


In our next blog we shall learn about mitosis meiosis I hope the above explanation was useful.Keep reading and leave your comments.


Friday, August 13, 2010

what is mutation ?


what is mutation ?

A mutation is a standing occurrence in the DNA ordering of a sequence. Mutations in a sequence's DNA ordering can sterilize the radical lsd succession of the catalyst encoded by the cistron.


How does this happen? Suchlike text in a sentence, the DNA sequence of each cistron determines the paraffin dot ordering for the accelerator it encodes. The DNA film is interpreted in groups of troika nucleotide bases, called codons. Each codon specifies a azygous group dissolvent in a accelerator.

In our next blog we shall learn about primary source definition I hope the above explanation was useful.Keep reading and leave your comments.

Wednesday, August 11, 2010

what does alcohol do to your body

what does alcohol do to your body ?

Alcohol causes intoxication when consumed in high doses and act as a poision. Though alcohol has ill effects on all the body organs, certain organs are affected more than others.

a) On nervous system :

Alcohol has an anaesthetic effect on the nervous system and first affects cerebrum followed by cerebellum and other parts. These effects can be characterised by loss of judgement, will power and self control, loss of emotional control, loss of moral sense and visual problems.

b) On stomach:

A large dose of high concentration alcohol causes increased secretion of gastric juices which cause inflamation of gastric mucosa leading to gastritis.

c) On liver:

Inside the liver, alcohol is changed into more toxic compound -aceteldehyde which provide energy to synthesize fats from alcohol. So liver becomes the storehouse of fats which leads to a fatty acid syndrome.

d) On Heart:

Alcohol stimulates the deposition of alcoholic fats on the walls of blood vessels which becomes rigid and brittle. This increses blood pressure and adversly affects the working of the heart.

e) On kidney:

In an alcoholic, theurine becomes hyperosmotic which interferes the normal functioning of nephrons of kidney.

In our next blog we shall learn about london dispersion forces I hope the above explanation was useful.Keep reading and leave your



Tuesday, August 10, 2010

what are atoms

what are atoms ?

A meteorite from spaos^'rock from Mars, a pea in the garden, the soil or our body cells, every substance in the universe is made up of minute particles called atoms.

Atoms combine in numerous ways to form different substances. For example, common salt has a combination of atoms which are different than that of water. Single atoms are far too small to be seen, even with the most powerful microscope. For example, about four billion atoms would fit side-by-side on the full stop at the end of this sentence.

Inside the atom are a variety of even tinier particles. These are called subatomic particles. They rarely exist on their own. Atoms are the smallest particles that may or may not exist by themselves. In other words, we can say that the atom of a substance can retain the properties of that substance. Every atom of iron will retain the properties of iron. If you break down an atom, the substance no longer exists.

In our next blog we shall learn about ovarian cycle I hope the above explanation was useful.Keep reading and leave your comments.