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Calculate volume of 2m copper sulphate solution required for complete displacement copper by 13 gm of zinc

Posted by Honey Sharma 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

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What is the momentum of particles associated with de broglie's wavelength of 1A°?

Posted by Shashwat Shukla 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

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Calculate total number of protons in 78gm of methane

Posted by Himanshi Yadav 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

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Important of chemistry?

Posted by Rajan Gupta 6 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Garima ☺ 6 years, 8 months ago

Check in Ncert... In the first page of 1st chapter.. It will help uh

Komal Sharma 6 years, 8 months ago

Chemistry plays a very important role in industries for manufacturing of medicine , dyes etc

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Law of reciprocal proportion P / \ H---Cl

Posted by Vishesh Kundu 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

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Difference between molarity and molality.

Posted by Govind Agrawal ?????????? 6 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Aman Aman 6 years, 8 months ago

moles per litre is called molarity moles per kg called molality

Vaikundam Janaki 6 years, 8 months ago

Molarity is the no. Of moles of solute per litre of soln. Molality is no. Of moles of solute per kg of solvent

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Calculate the total no of bicarbonate ions present in fused or molten Mg(HCo3)2 having mass 146grams

Posted by Prashu 6 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Drishti Arora 6 years, 8 months ago

Moles of Mg(HCO3)2 =GIVEN MASS/MOLAR MASS =146/146===1 MOLE since, 1 mole=6.022 *10²³ particles /ions of Mg(HCO3)2 so, (HCO3)2 IONS present in given compound will be===2*6.022*10²³ =12.044 * 10²³ ions... Because 2 moles of bicarbonate ion is present in 1 mole of magnesium hydrogen carbonate...

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A mixture of CuSO4.5H2O and MgSO4.7H2O is heated until all the water is driven off. If 5.0g of mixture gives 3.0g of anhydrous salts ,what is the percentage by mass of CuSO4.5H2O in original mixture?

Posted by Om Malunjkar 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

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Order of magnitude

Posted by Shivam Goyal 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

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Please tell me which is the best iit coaching institute in hisar , haryana with affordable fees

Posted by Sonam Malik 6 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Drishti Arora 6 years, 8 months ago

Don't know.. Bt I think there is nothing special in Haryana for IIT coaching... U should take some good State for that...

Sonam Malik 6 years, 8 months ago

Someone has answered but where is the answer

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The species which has its fifth ionisation potential equal to 340 V is

Posted by Vilas Kachhadiya 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

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What is the atomic number of calicium

Posted by Vishal Chhabra 6 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Sapna Jain 6 years, 8 months ago

Rajat Upreti 6 years, 8 months ago

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Which is more electron withdrawing - hydrogen ion or phenyl ring

Posted by Sonam Malik 6 years, 8 months ago

CBSE > Class 11 > Chemistry

3 answers

Aman Aman 6 years, 8 months ago

phenyl ring

Sonam Malik 6 years, 8 months ago

So formic acid should be weaker acid than benzoic acid

Shivendu Gaur 6 years, 8 months ago

Phenyl ring

ANSWER

Importance and scope of chemistry in points

Posted by Prachi Goyal 6 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Sapna Jain 6 years, 8 months ago

NCERT

Rajat Upreti 6 years, 8 months ago

Its given in the NCERT book.. just make ur own notes.. thats the best way to study n remmember

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A sample contains 3 mol of H20 find : 1. Total number of molecules in the sample 2. Total number of atoms in the samples 3. Total number of H atoms in the sample 4. Total number of O atoms in the sample

Posted by Harshdeep Brar 6 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Priyanshu Kumar 6 years, 8 months ago

1)there are N= 18.066*10^23molecules(2) no of atoms =3(N) (3)total no of H atoms =2(N) (4)no of O atoms=N

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Why is the compound having solubility get precipitated ,? for example - look in ncert method boiling for removing temporary hardness

Posted by Sonam Malik 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

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Explain plunk constant

Posted by Ranjan Kumar 6 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Rishika Choudhary 6 years, 8 months ago

Planck's constant is a proportionality constant. Its value is approx. equal to 6.626x10^-34 joules sec.

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How to convert Ethene to ethane Benzene to Toluene Methane to ethane Ethyne to ethane

Posted by Shivang Gusain 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

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How many type of chemistry are there

Posted by Aman Pratap Singh 6 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Sapna Jain 6 years, 8 months ago

ANSWER

Explain saytzeft's rule with example

Posted by Anuranjan Singh 6 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Aman Aman 6 years, 8 months ago

acco to satzeff rule more alkylted alkane can be formed as product

Yogita Ingle 6 years, 8 months ago

According to Saytzeff rule "In dehydrohalogenation reactions, the preferred product is that alkene which has the greater number of alkyl groups attached to the doubly bonded carbon atoms."
For example: The dehydrohalogenation of 2-bromobutane yields two products 1-butene and 2-butene. Out of these 2-butene is the major product (80%) as it is more highly substituted and it is more stable.