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Calculate the energy required to EXCITE on litre of hydrogen GAS at 1 ATM ... The energy for the DISSOCIATION of H-H bond is 436 kJ mol-1. ... EV = 13.6 * (1/1 – 1/4) = 13.6 * 3/4 = 10.2e

Calculate the pH of the FOLLOWING solutions: (a) 2G of TIOH dissolved in water to give 2 litres of solution. (B) 0.3g of NaOH dissolved in ...

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Benzyl chloride is highly reactive and can undergoes the Sn1 REACTION as the sn1 reaction occurs when there is a stable carbocation formation OCCUR .And UPON losing the CHLORINE the benzyl chloride forms the benzyl carbocation which have the resonance stabilization  

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We will CALCULATE the PH of 25 ML of 0.1 M HCl titrated with 0.1 M NAOH. At each .... The added base will NEUTRALIZE some of the of acid

The ANSWER is GIVEN is the ATTACHMENT ............HOPE it HELPS you

Platinum has 6 stable isotopes and an OXIDATION TRANSITION of 4, (2).

So the compound pl5 will be very unstable and we know that how MUCH less reactive parinam is

Galvinistion is method of coating of zinc layer on iron to protect from rusting .
ANOTHER method
1 by appling paint.
2 Additionally, the use of cathodic protection or a SACRIFICIAL anode can protect important metals from galvanic corrosion. SEE below for more INFORMATION.

A biomolecular reaction MAY become KINETICALLY of FIRST ORDER if ONE of the reactants is present in excess.

Pb3O4=PbO+O2
Balance=
2Pb3O4=6PbO+O2

D) LANTHANONES ( or LANTHANIDES )

ANSWER----

◆ When metal react with acid to give salt and hydrogen gas.

EQUATION = Metal + Acid ---- Salt and Hydrogen gas

◆ We will CHECK hydrogen gas will released or not with the help of pop sound. PoP Sound can be tested by burning a candle and near the TEST TUBE, so we can LISTEN pop sound so hydrogen gas is there.

◆ We will take Zinc (Zn)

Equation = Zn + 2HCl --- ZnCl2 + H2

in this above reaction ZnCl2 is salt and H2 is hydrogen gas

Zn = Zinc
HCl = Hydrochloride acid
ZnCl2 = Zinc chloride
H2 = Hydrogen

Hope it's help you....
Any doubts you can ask me....
Thank you.....

They are ADDITIONALLY NAMED as TRANSITION ELEMENTS.

3.6gm GLUCOSE LEFT ,SEE SOLUTION for DETAILS

When acid REACTS with METAL FORM metal salt + HYDROGEN GAS

Halogen DERIVATIVES of Alkanes

The compounds formed by the replacement of one or more HYDROGEN atoms of alkanes by halogen atoms are called halogen derivatives of alkanes.
Examples: CH3Cl (methyl CHLORIDE), C2H5 Br (ethyl bromide)

 

 

Classification

 

Halogen derivatives


Monohalogen
derivatives contain
one halogen atom
per molecule, 
e.g. CH3Cl

Dihalogen 
derivatives contain
two halogen atoms
per molecule,
e.g. CH2Cl2

Trihalogen 
derivatives contain
THREE halogen atoms
per molecule, 
e.g. CHCl3

Tetrahalogen 
derivatives contain
four halogen atoms 
per molecule, 
e.g. CCl4

 

 

Monohalogen Derivatives


They are also called alkyl halides. Their general formulais CnH2n+1 X where X = Cl, Br or I. They are also represented as R - X, where R stands for an alkyl group.
Nomenclature according to:
Common system - alkyl halide
IUPAC system - haloalkane

 

 

Classification of Monohalogen Derivatives of Alkanes or Alkyl Halides


Alkyl halides are classified into the following three classes depending on the number of alkyl groups ATTACHED to the carbon atom bearing the halogen atom:

Primary Alkyl Halide: The alkyl halide in which the carbon atom bearing the halogen atom is attached to not more than one other carbon atom or alkyl group is called a primary alkyl halide. 
General Structure: R - CH2 - X
Examples: CH3 - CH2 - Cl, CH3 - CH2 - Br

Secondary Alkyl Halide: The alkyl halide in which the carbon atom bearing the halogen atom is attached to two other carbon atoms or alkyl groups is called a secondary alkyl halide. In such halides, the halogen bearing carbon atom is attached to only one hydrogen atom. 
Example: (CH3)2CH - Cl (isopropyl chloride)

Tertiary Alkyl Halide: The alkyl halide in which the carbon atom bearing the halogen atom is attached to three other carbon atoms or alkyl groups is called a tertiary alkyl halide. In such halides, the halogen bearing carbon atom is devoid of any hydrogen atom.

Example: (CH3)3 C - Cl (tertiary butyl chloride)

In this PROCESS oxidation and reduction occurres because H2 react with 0 to from H20 Hence oxidation is occur and reduction is ALSO occur because cuo lost o to form CU

The next ELEMENT is selenium ATOMIC NUMBER 34

PbO is LEAD oxide,NITROGEN DIOXIDE[NO2​] which appears as BROWN FUMES and oxygen is produced. Lead nitrate on heatingdecomposes to lead monoxide, nitrogen dioxide and oxygen. NO2 is liberated, along with oxygen, as a reddish brown gas. The residue left is lead monoxide.


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Lactic acid is prevalent in sour MILKPRODUCTS. Addition of a BASE such asbaking soda would tend to neutralize that acid. ... DEPENDING on what ELSE in the way of process is in the recipe, the addition of baking soda may have had yet another purpose such as mitigating against an undesired AMOUNT of leavening.

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No its not TRUE as ELECTRON and neutron are also present in atom . atom is DIVISIBLE .
CORRECT me if wrong as I am 6th grader

Any chemical substance which REGULATES the RATE of reaction is known as a catalyst,i.e, it will either speed up the reaction or SLOW down the rate of reaction

Eg. KMNO4 , K2CR2O7 etc..

Answer: RATE CONSTANT is

Explanation: For First order REACTION, the expression for rate constant is:

k= rate constant

t= TIME REQUIRED for a reaction

a= initial concentration

x= amount of reactant decomposed in time t

a-x= amount of reactant left after time t

If initial concentration (a) = 100

As 25% of the reactant has decomposed, x=25

(a-x)= (100-25) = 75

Putting in the values we get

You MAY CHECK it on GOOGLE

Nitrogen's WEIGHT is 14 g and we have 56G .So, we have 4 mole of nitrogen.
now 1 mole=6.022•10²³
so in 4 mole =24.088•10²³ no. of particles

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It is a CHEMICAL FUEL

The HOLE in an blade must be made to be smaller than the WOOD.

This is accomplished in three different ways.

The OLD blacksmith's WAY is to heat the blade so that the hole is LARGE enough to go over the wood and when it is cooled it will shrink down to the size of the wood. Wagon wheels are made this way.

Secondly, the wood is put into the hole of the blade and then spread out with wedges that expand the wood. Hammers are often made this way.

Thirdly, in a pick axe the blade is dropped onto the the handle from the hand end and the working end is over-sized so that it will not slip off.

Alloy MEANS a SUBSTANCE in which both metal and NONMETAL character FIND

It does contain unpaired electrons though the total no. of electrons is even. ACCORDING to the molecular ORBITAL THEORY, it contains 2 unpaired electrons, one each in antibonding π*2px and π*2py orbitals.

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There are many INSTRUMENTS used in a science laboratory....

Some of these are:

A measuring cylinder: used for taking measurements of LIQUIDS to be used in different experiments ..

A thermometer: used for measuring the temperature of liqids..

Scale balance: for taking measurements of mass of a particular substance ...

Hope this HELPED you ...

# Drishti