Thursday, September 23, 2010

bivariate correlation

Let us learn about bivariate correlation

A correlation is referred as a measure of the extent when the change in 1 variable are associated or followed by the change in the other variable. 2 variables which are connected in such a way are known as bivariate population. Best example, the yield of a crop varies with the amount of rainfall and so on.

A correlation, or bivariate correlation, measures the relationship between 2 variables. The correlation measures the strength of the relationship.

A bivariate correlation is a statistical test which measures the association or relationship between 2 continuous/interval/ordinal level variables. This test will use probability & tell the researcher the nature of the relationship between the 2 variables, but not the direction of the relationship in the sense of describing causality

Correlation coefficients range from -1 to +1. If the bivariate correlation coefficient is -1, the relationship between the 2 variables is perfectly negative, & if the bivariate correlation coefficient is +1, the relationship between the 2 variables is perfectly positive. The closer the correlation coefficient is nearer to -1 or +1, the stronger the relationship. The closer the correlation coefficient is to zero, the weaker the relationship.


In our next blog we shall learn about advantages of asexual reproduction I hope the above explanation was useful.Keep reading and leave your comments.


Wednesday, September 22, 2010

reproduction of bacteria

Let us learn about reproduction of bacteria

Bacteria can reproduce at marvelous speeds. Some bacteria can reproduce as often as once every twenty minutes! However, bacteria have certain conditions in which to reproduce. These circumstances are not often met, & that is 1 thing that keeps bacteria from growing out of control.

Bacteria reproduce using 2 basic methods: asexual & sexual reproduction.

Asexual reproduction includes only 1 individual or parent. The offspring produced by asexual reproduction are exact duplicates of the parent. Binary fission is the method by which a bacteria splits into 2 cells. Each cell gets an exact copy of the parent cell's genetic material.

Sexual reproduction involves the joining of 2 parent cells & the exchanging of genetic materials. In sexual reproduction, the offspring will contain a mixture of the parent cells' traits. Conjugation is the method by which bacteria join & exchange genetic materials. Once genetic materials are exchanged, every single bacteria cell will go through binary fission to produce an offspring with a new genetic makeup.


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

Monday, September 20, 2010

hydrocarbon suffix

Let us learn about hydrocarbon suffix

For hydrocarbons with 1 or more single bonds between carbon atoms, the molecules are known as alkanes, & the suffix is "-ane".
With 1 or more double bonds, these molecules are known as alkenes the suffix is "-ene".
With 1 or more triple bonds, the molecules are known as alkynes, and the suffix is "-yne".

Hydrocarbons are a class of molecules which contain only carbon & hydrogen atoms. Some of them make very good fuels. Gasoline contains a mixture of hydrocarbons. Unsaturated hydrocarbons, that contain 1 or more double bonds, are useful chemicals for many reactions.

The simplest hydrocarbons are linear molecules in that each carbon atoms is bonded to 2 other carbons atoms, in a linear fashion, except for the carbon atoms at the ends, which are only bonded to 1 other carbon atom. Saturated hydrocarbon names basically end with the suffix "ane" which distinguishes them from unsaturated hydrocarbons, which end with the suffix "ene".

Linear saturated hydrocarbons are called as paraffins or alkanes. Their general formula is CnHn+2.

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


Sunday, September 19, 2010

ammonium phosphate formula

Let us learn about ammonium phosphate formula

Formula of Ammonium phosphate - (NH4)3PO4

Molecular Weight of Ammonium phosphate - 149.086741 [g/mol]

Molecular Formula of Ammonium phosphate - H12N3O4P

Exact Mass of Ammonium phosphate - 149.056542

MonoIsotopic Mass of Ammonium phosphate - 149.056542

Topological Polar Surface Area of Ammonium phosphate - 89.2

H-Bond Donor of Ammonium phosphate: 3

H-Bond Acceptor of Ammonium phosphate: 4

IUPAC Name of Ammonium phosphate: triazanium phosphate

Ammonium phosphate is referred as the salt of ammonia & phosphoric acid. Ammonium phosphate has the formula (NH4)3PO4 & it consists of ammonium cations & phosphate anion. Ammonium phosphate is obtained as a crystalline powder upon mixing concentrated solutions of ammonia & phosphoric acid, or on the addition of excess of ammonia to the acid phosphate (NH4)2(HPO4). Ammonium phosphate is soluble in water, & the aqueous solution on boiling loses ammonia & the acid phosphate (NH4) (H2PO4) is formed.

Ammonium phosphate is mostly used as an ingredient in fertilizers as a high source of elemental nitrogen. Ammonium phosphate is also used as a flame retardant in thermoplastic compositions

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

Thursday, September 16, 2010

absorption and adsorption

Let us learn about absorption and adsorption

Adsorption is referred as the process of attraction of atoms or molecules from an adjacent gas or liquid to an exposed solid surface. Such attraction forces support the molecules into layers onto the existent surface.

Absorption generally refers to 2 phenomena which are largely unrelated. In 1 case, it refers to when molecules, atoms, or ions enter some bulk phase - gas, liquid or solid material. For instance, a sponge absorbs water when ever it is dry.

Absorption defined as the process by which the energy of a photon is taken up by another entity, best example, by an atom whose valence electrons make transition between 2 electronic energy levels. The photon is destroyed in the method. The absorbed energy can be re-emitted as radiant energy or transformed into heat energy. The absorption of light during wave propagation is often known as attenuation. The tools of spectroscopy in chemistry are sourced on the absorption of photons by molecules & atoms.

Adsorption is similar, but refers to a surface rather than a volume: adsorption is a process which occur when a gas or liquid solute accumulates on the surface of a solid or, more rarely, a liquid, forming a molecular or atomic film. Adsorption is different from absorption, in that a substance diffuses into a liquid or solid to form a solution.


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


Wednesday, September 15, 2010

non conventional energy sources

Let us learn about non conventional energy sources

Non-conventional energy sources are defined as the energy sources which gives non-renewable energy.


Non conventional energy sources are referred the energies that are not replaced by any new identical 1 in the place of the used ones.


Fossil fuels are the Best example for the non-conventional energy source. You cannot replace the used fuels by new 1 in the same source. Consider the sources to a pencil, if you sharpen it, the size reduces, and you cannot increase the size of used sharpened pencil. Similarly we cannot refill the source, if you take the fuel the amount of fuel decreases, 1 day it will be completely exhausted.


Some other examples for the non-conventional energy sources tar heavy oil, oil shale, sands, and bio-fuels.


In our next blog we shall learn about gas stations near me I hope the above explanation was useful.Keep reading and leave your comments.



examples of inertia

Let us learn about examples of inertia

Inertia is referred as the resistance of any physical object to a change in its state of motion or rest. Inertia is represented numerically by an object's mass


Best Examples of Inertia of Rest

  • A passenger standing in a bus leans backwards as soon as the bus starts all of a sudden
  • Fruits & flowers fall down when the branches of a tree are shaken by wind
  • particles of Dust on a carpet falls when we beat the carpet with a stick & or with hard object

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


Monday, September 13, 2010

ecological balance

Let us learn about ecological balance

What is ecological balance?

Ecological balance is to preserve natural resources & nature & to keep the nature more natural. In Canada, an initiative was taken to grow more & more trees across the country, to maintain the balance of oxygen & to overcome the problem of deforestation.


In India, a telecom company took an initiative to conserve the tiger breed across the countries, which have been counted as 1411.


people try to save water or paper & many other natural & repressible resources just to maintain the balance in the ecology.

The "ecological balance" is refers to the balance into the carbon cycle between the plants that use CO2 & the processes that produce it. Chopping down a tree & burning it is a zero-sum gain as long as you allow a new tree to grow. This is the way it was prior to the industrial revolution.


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


Sunday, September 12, 2010

abiotic factors of the tundra

Let us learn about abiotic factors of the tundra

Physical, or nonliving, factors which shapes an ecosystem

Strong Winds, little precipitation rainfall

Short summer days

Very long and cold winters, poor soil

Permafrost-a layer of permanently frozen subsoil

Temperature cold in winter
mineral composition

Season long & cold winters; short summer days
altitude determines whether it is an arctic tundra or an alpine tundra
cloud coverage, angle of sunlight
wind strong in the tundra
permafrost only top layer of soil thaws in summer; so trees cannot grow
presence of rocks


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

Wednesday, September 8, 2010

Anomeric

Let us learn about anomeric

Anomeric is the method of conversion of 1 anomer to the other. Anomerization is the anomeric analogue of epimerization.

The anomeric centre is in hemiacetals the anomeric carbon C-1 that is attached to the hemiacetal oxygen & in hemiketals carbon C-2, attached to the hemiketal oxygen. In aldohexoses & smaller carbohydrates the anomeric reference atom is the furthest chiral centre in the ring. In α-D-glucopyranose the reference atom is C-5.


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

Tuesday, September 7, 2010

decantation

Let us learn about decantation

Decantation is the method by that a clear liquid obtained after sedimentation, is transferred into another container, without disturbing the settled particles.

Decantation is a method for the separation of mixtures. Decantation is a very quick process for separating a mixture of a liquid & a heavier solid

Decantation is the act of pouring off clear liquor gently from its lees or sediment, or from 1 vessel into another.

In our next blog we shall learn about grade 12 chemistry I hope the above explanation was useful.Keep reading and leave your comments.


Monday, September 6, 2010

reactivity of metals

Let us learn about reactivity of metals

The activity series or reactivity series is an empirical series of metals, in order of "reactivity" from highest to lowest

Some substances react very easily than other metals then we say they are more reactive. Some metals are very reactive than other metals.

Some halogen elements are very reactive than other metals.

Different metals have different levels of reactivity. Whether the metals are made to react with water, oxygen, acids or any other chemical, the order of reactivity of metals is always similar. Those the reactivity is a basic property of the metal rather than the other chemical.

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

Sunday, September 5, 2010

chemistry tutor

Let us learn about chemistry tutor

Chemistry deals with finding what substances are made of, what type of transformations take place, & different chemically related facts about a certain organism or substance Physical Chemistry is all about the patterns of chemical behavior in chemical reactions under various conditions that result from the physical properties & chemical properties of substances. A great deal of physical chemistry involves measurement of some kind.

A Chemistry Tutor will help student get the most out of Chemistry no matter what level student are studying. Chemistry Tutors can help identify areas student need to work on & bring their expertise & experience to bear & quickly bring student up to speed.

A chemistry tutor can work with student on topics such as:

  • Biochemistry
  • Inorganic Chemistry
  • Organic Chemistry
  • Physical Chemistry
  • Analytical Chemistry

General science tutors may suit student better if student are studying a more basic level of Chemistry. They will be able to help relate what students are working on with other areas of science such as Biology & Physics.

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

Thursday, September 2, 2010

pure substance

Let us learn about pure substance

Pure substance is a substance with out adulteration. It cannot be separated by physical process. It can be separated by chemical process

A pure substance is a type of matter which cannot be separated into other type of matter by any physical or chemical process. A pure substance has the same color, taste, texture & composition. A pure substance is made out of a same particle.

A pure substance is a form of matter which has a definite composition & distinct properties.


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

Wednesday, September 1, 2010

activity series of metals

Let us learn about activity series of metals

The Activity Series of the metals is an invaluable help to predicting the products of replacement reactions. Activity series of metals also can be applied as an aid in predicting products of some other reactions.

Each element on the inventory replaces from a compound any of the elements below it.

* The 1st 5 elements lithium sodium are known as active metals & they react with cold water to produce the hydroxide & hydrogen gas.

* The next 4 metals magnesium - chromium are considered active metals & they will react with very hot water or steam to form the oxide & hydrogen gas.

* The oxides of all of these 1st metals resist reduction by H2.

* The next 6 metals iron - lead replace hydrogen from HCl & dil. sulfuric & nitric acids. Their oxides undergo reduction by heating with H2, carbon, & carbon monoxide.

* The metals lithium copper, can blend directly with oxygen to form the oxide.

* The last 5 metals mercury - gold are often found free in nature, their oxides decompose with mild heating, & they form oxides indirectly.

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

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

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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.