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Calculate the total no of neutrons in 7mg of C^14

Posted by Surendrapal Singh Singh Gaur 6 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Pranav Gupta 6 years, 7 months ago

Mass of 1 atom of C-14 = 14 a.m.u.

Mass of 1 mole of C-14 = 14 grams

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(using unitary method)

14 grams = 1 mole

Therefore, 7 grams = 0.5 mole

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1 atom of C-14 has 8 neutrons

0.5 mole of C-14 has 8 * N_A = 8 * 6.022 * 10²³= 4.8176 * 10²⁴ neutrons

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How we can find out atomic mass without knowing neutron

Posted by Mukesh Antil 6 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Manaswi Raj 6 years, 7 months ago

By solving it with the help of school teacher

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ANSWER

What is the avagadro no.

Posted by Shruti Tyagi 6 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Manaswi Raj 6 years, 7 months ago

6.023×10^23 mol/ion/atom/electron

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Rahul Sahoo 6 years, 7 months ago

It is equal to 6.022×10^23 molecules/ions/atoms/electrons

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ANSWER

What is redix reduction

Posted by Priya Pandey 6 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Vivek Kumar 6 years, 7 months ago

Redox reaction is a reaction in which oxidation and reduction take place simultanously .

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Komal Sharma 6 years, 7 months ago

If you want to ask about redox reaction so it is the combination of oxidation and reduction reaction

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Explain molarity ,molality,mole fraction

Posted by Ravi Nathera 6 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Dhama ...? 6 years, 7 months ago

Molarity:-the number of moles of solute dissolve in 1 litre of solution ...and it is denoted by (M)... Molality:-the number of moles of solute dissolve in 1kilogram of solvent..and it is denoted by (m)... Mole fraction:-the ratio of the number of mole of a particular component to the total value of the solution...

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A polystyrene, having the formula Br3C6H3(C3H8)n, was prepared by heating styrene with tribromobenzoyl peroxide in the absence of air. If it was found to contain 10.46per cent bromine by weight, find the value of n.

Posted by Ananya Sharma 6 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Rohit Sahani? 6 years, 7 months ago

Nice name yrr

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Rohit Sahani? 6 years, 7 months ago

Hlow ananya

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50.0 kg of N2 and 10.0kg of H2 are mixed to produce NH3.calculate the NH3 formed.identify the limiting regent in the production of NH3 in this situation

Posted by Kartik Satpute 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is gram atomic mass?

Posted by Aryan Pandita 6 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Gaurav Seth 6 years, 8 months ago

Gram atomic mass is the mass, in grams, of one mole of atoms in a monatomic chemical element. It is numerically equal to the relative atomic mass (or atomic weight) in grams. The atomic mass of an element expressed in grams is calledgram atomic mass. For example oxygen is 16 grams.

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Discuss the formula of wd for isobaric process ?calculate the pressures volume wd when a system containing a gas expands from 1.0litre to 4.0 liter against a constant extenal pressure of 20Atm

Posted by Shivani Sharma 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Define telluric screw

Posted by Mahima Yadav 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

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Molar mass of C8 H6 O4

Posted by Gurpreet Kaur 6 years, 8 months ago

CBSE > Class 11 > Chemistry

4 answers

Komal Sharma 6 years, 7 months ago

12*8+1*6+16*4 96 +6+64 = 166g

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Shashank Sharma 6 years, 8 months ago

166g

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Dhama ...? 6 years, 8 months ago

166g/mole

1Thank You

Kashif Hussain 6 years, 8 months ago

Molar mass of C8H6O4 is =166

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ANSWER

When cbse will declare the result of class 10

Posted by Supriya Tiwari 6 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Adarsh Singh 6 years, 7 months ago

On 5 may

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Arpita Malik 6 years, 8 months ago

Between 13-17 may

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Calculate the concentration of nitric acid in moles per litre in a sample which has a density 1.41g ml and the mass percent of nitric acid in its being 69%

Posted by Brijlal Kumar 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

determine the pH of 10-8 M HCl solution taking into account the H+ produced by water also.(given: log 11=1.0414)

Posted by Titu Bhai 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Provide me best youtube channel s to study maths physics n chemistry ???

Posted by Devil ? 6 years, 8 months ago

CBSE > Class 11 > Chemistry

3 answers

Devil ? 6 years, 7 months ago

Okk

1Thank You

Piyush Gautam.. 6 years, 7 months ago

yaa... aapne pucha tha isiliye bta diya

1Thank You

Devil ? 6 years, 8 months ago

Yes i knew he is a great teacher

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how to solve numericals easily help me plzof chapter 2

Posted by Geetika Mehta 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

How many orbitals are possible with the quantum no. n=3,L=2,m = +2

Posted by Anjna Bansal 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Mean free path of gas molecule at constant temperature is inversely proportional to

Posted by Happy Raj 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Find out the volume of cl2 at stp produced by the action of 100 cc of 0.2normal Hcl on access of MnO2

Posted by Piyush Panchal 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Volume of co2 obtained at stp by the complete decomposition of 9.85 g Na2Co2 is

Posted by Harsh R 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Which of the following is the strongest oxidising agent.?

Posted by Rishav Saksena 6 years, 8 months ago

CBSE > Class 11 > Chemistry

3 answers

Devil ? 6 years, 8 months ago

Chlorine

1Thank You

Sarthak Agarwal 6 years, 8 months ago

Fluorine

1Thank You

Ananya Jaiswal 6 years, 8 months ago

0Thank You

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Calculate molality and mole fraction of 10 percent nitric acid (Hno3)

Posted by Ishu Kumar 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Molecular mass of sodium acetate

Posted by Anuj Rao 6 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Dhama ...? 6 years, 8 months ago

83g/mole

1Thank You

Pallavi Jha 6 years, 8 months ago

82.0343 g/mol

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ANSWER

Plz someone share few numericals of mole concept and empirical and molecular formula.

Posted by Prabh Singh 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Explain depression in freezing point

Posted by Aaditya Rathore??? 6 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

sir in chapter 2 important question

Posted by Abhimanu Singh 6 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Sapna Jain 6 years, 8 months ago

All imp.topics

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What is the difference between minerals and ores ?

Posted by Diptangshu Bhattacharjee 6 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Preeti Vashist 6 years, 8 months ago

Minerals are naturally occurring inorganic solids with a crystalline structure and a definite range of chemical formula. Ores are concentrations of minerals in rock that are high enough to be economically extracted for use.

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Two oxides of a metal contains 27.6 percent and 30.0 percent of oxygen respectively. If the formula of first oxide is M3O4 , find out that of second.

Posted by Rabina Sharma 6 years, 8 months ago

CBSE > Class 11 > Chemistry