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How electron lose,gain and share?

Posted by Aleena Ss 9 months, 2 weeks ago

1 answers

Adithya Dev 9 months, 2 weeks ago

When no of electrons in the valence shell is less than 4, then, these electrons have a tendency to be lost from the atom so that the atom can attain the nearest (penultimate shell) octet. When no of electrons is greater than 4, there is a tendency that the atoms gain electrons in their neighborhood to attain nearest (valence shell) octet. But, when no of valence electrons is equal to 4, gaining 4 electrons is a matter outside the control of the nucleus and losing 4 electrons causes huge energy loss to the molecule, disturbing it's thermodynamic stability. So, here electrons are just shared, and not completely transferred as in the previous cases.

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Calculate the molarity of a solution containing 5g of NaOH in 450ml solution

Posted by Sarveshaa Ss 9 months, 3 weeks ago

CBSE > Class 11 > Chemistry

1 answers

Adithya Dev 9 months, 2 weeks ago

M = Wb/Mb V(L) = 5 ×1000/40×450 = 0.27 M. //

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Determine the empirical formula of an oxideof iron,which has 69.9% iron and 30.1% dioxygen mass

Posted by Drishti Sharma 9 months, 3 weeks ago

CBSE > Class 11 > Chemistry

1 answers

Adithya Dev 9 months, 2 weeks ago

n(Fe) = 69.9/56 = 1.24. n(O2) = 30.1/32 = 0.94. Therefore, n(Fe) / n(O2) = 1.3 : 1. Therefore, Empirical formula = FeO (nearly).

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What are the frequency and wavelength of a photon emitted during a transition from = 5 state to the n = 2 state in the hydrogen atom?

Posted by Tamanna Tirkey 9 months, 3 weeks ago

CBSE > Class 11 > Chemistry

1 answers

Paras Rawat 9 months, 3 weeks ago

Frequency=6.91

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Nitrogen oxide compound name

Posted by Pranshu Patel Patel 9 months, 4 weeks ago

CBSE > Class 11 > Chemistry

4 answers

Anshika Gupta 9 months, 3 weeks ago

Nitric oxide

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Bhavya Garg 9 months, 3 weeks ago

Hello

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Rishita Saw 9 months, 3 weeks ago

Nitric oxide

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Pranshu Patel Patel 9 months, 4 weeks ago

Sir

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Write about de brogile

Posted by Mohd Arsalan 9 months, 4 weeks ago

CBSE > Class 11 > Chemistry

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Write about Discovery of electrons

Posted by Anushya G 10 months ago

CBSE > Class 11 > Chemistry

1 answers

Abhipsa Behera 10 months ago

Electrons:They are the negatively charged subatomic particles that were discovered by scientist J.J. Thomson in the cathode ray-discharge tube experiment. J.J. Thomson's Cathode Ray Experiment:In this experiment, he used a special hard, cylindrical glass tube known as a discharge tube that consists of two, metal plates.These metal plates were called electrodes, each sealed at the two ends of the tube.These metal plates are connected to the terminals of a high-voltage battery.The metal connected to the positive terminal is called the anode and the metal plate connected to the negative terminal is called the cathode.A vacuum pump is connected to one side of the tube to lower the pressure inside the tube.Very high voltage electricity through the discharge tube was passed at very low pressure. Observations:From the experiment, he observed that a continuous beam of rays was emitted.A green fluorescent glow was observed at the end of the tube.They were found moving from the cathode region to the anode region. This proved that these rays consisted of negatively charged particles and these particles were called electrons.

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How to convert gram into mole

Posted by Omm Prakash 10 months ago

CBSE > Class 11 > Chemistry

2 answers

Kanchan Gadwal 9 months, 3 weeks ago

Mole= mass/atomic weight For example Convert 56g of water into moles 56/18 = 3

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Omm Prakash 9 months, 4 weeks ago

Answe

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Do you think Mourad knew what he was doing when he took away the horse? What may be his mental status at that time?

Posted by Deepshika Das 10 months ago

CBSE > Class 11 > Chemistry

0 answers

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Redox reaction in acidic medium

Posted by Jasmine Bhardwaj 10 months ago

CBSE > Class 11 > Chemistry

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What is the metallic bond

Posted by Mohhamad Aman 10 months ago

CBSE > Class 11 > Chemistry

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4.2g of Sodium Carbonate is added to a solution of acetic acid which is of 10g and it is observed that 2.2g of Carbon Dioxide is released to atmosphere and residue left 10g . Show that data illustrates law of conservation of mass.

Posted by Utkarsh Mishra 10 months ago

CBSE > Class 11 > Chemistry

0 answers

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a mixture of 24 DM cube of hydrogen and 100 DM cube of oxygen what incident and reaction mixture was a colder to the room temperature and press what will be volume of gas meaning of end of the reaction

Posted by Tarun Bhati 10 months, 1 week ago

CBSE > Class 11 > Chemistry

1 answers

Ayush Kumar 10 months ago

Not

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3 moles of N2 combines with 5 moles of H2 to form NH3 by haber's process. 1) which is limiting reagent? 2) calculate the grams of reactant left in container. 3) how many moles of NH3 are produced?

Posted by Asmi Sharma 2 months, 1 week ago

CBSE > Class 11 > Chemistry

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3 moles of N2 combines with 5 moles of H2 to form NH3 by haber's process. 1) which is limiting reagent? 2) calculate the grams of reactant left in container. 3) how many moles of NH3 are produced?

Posted by Asmi Sharma 10 months, 1 week ago

CBSE > Class 11 > Chemistry

0 answers

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Find the fraction of solute and solvent when0.49g of sulphuric acid is mixed with 9g of water

Posted by Putta Monika2 10 months, 1 week ago

CBSE > Class 11 > Chemistry

0 answers

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What is importants of chemistry?

Posted by Rahul Suthar 10 months, 1 week ago

CBSE > Class 11 > Chemistry

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How many grams of NaOH should we added to water to prepare 250 ml solution of 2M Naoh

Posted by Stuti Shetty 10 months, 1 week ago

CBSE > Class 11 > Chemistry

0 answers

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Conversion of ethane to methane

Posted by Amit Kumar 10 months, 1 week ago

CBSE > Class 11 > Chemistry

0 answers

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Calculate the wavelength for the shortest wavelength transaction in the balmer series.

Posted by Roshni Gupta 10 months, 1 week ago

CBSE > Class 11 > Chemistry

1 answers

Mehraj K 9 months, 3 weeks ago

Hi roshni

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H2 or o2 dono gas h aur dono fire produce karti H2 o2 product hota h2O hota h aur vo fire ko bhujane madad krta hai

Posted by Pratham Aggrwal 10 months, 2 weeks ago

CBSE > Class 11 > Chemistry

1 answers

Arusmita Priyadarshani 10 months, 1 week ago

While hydrogen and oxygen combustion produces a significant amount of heat and sustains the fire , the introduction of water vapor can help in extinguishing the fire by absorbing heat, displacing oxygen and actions a barrier. ☺

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How to find normality

Posted by Srishti Thakur 10 months, 2 weeks ago

CBSE > Class 11 > Chemistry

1 answers

Anupam Yadav 10 months, 2 weeks ago

what volume of 10 molar hcl and 3 molar hcl should be mined to obtained lime of 6 hcl solution

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What is matter and what are different type of matter based on this

Posted by Prachi Kharanshu 10 months, 3 weeks ago

CBSE > Class 11 > Chemistry

3 answers

Ratan Patwa 7 months, 3 weeks ago

Anything which is occupied space and his mass.

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Srishti Thakur 10 months, 2 weeks ago

Matter anything has mass of occupied and space

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Alok Yadav 10 months, 3 weeks ago

Matter anything has mass of occupied and space

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A mixture of 24 dm^(3) of hydrogen and 100 dm^(3) of oxygen was ignited and the reaction mixture was cooled to room temperature and pressure. What will be the volume of gases remaining at the end of the reaction?

Posted by Mohit Meena 10 months, 3 weeks ago

CBSE > Class 11 > Chemistry

0 answers

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Calculate the mass percent of different elements present in sodium sulphate (Na2so4)

Posted by Salchina Sangma Sangma 10 months, 3 weeks ago

CBSE > Class 11 > Chemistry

2 answers

Abhishek Saini 10 months, 1 week ago

140

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Alok Yadav 10 months, 3 weeks ago

140

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11.11g of urea is dissolved in 100g of water, calculate the molarity and molality of the solution

Posted by Jeewan Chand 10 months, 3 weeks ago

CBSE > Class 11 > Chemistry

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A potassium iodide aqueous solution is 40% by mass. If the density of solution is 0.4 gm/ml. Calculate morality , molality , mole fraction of each compound

Posted by Khushi Singh 10 months, 3 weeks ago

CBSE > Class 11 > Chemistry

0 answers

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How to balanced redox reaction

Posted by Sandeep Jha 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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Suggest questions related about temperature conversion

Posted by Sulekha Maurya 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Sulekha Maurya 11 months ago

Hhehdhd

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An organic compound contains C = 40% . H = 6.6%if vapour density of the compound is 15 ,find its molecular formula .

Posted by Chandni Vishwash 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Chandni Vishwash 11 months ago

Molecular formula=n×Empirical formula N=mol. Wt /mass of EF VD Molecular weight=2×VD =2×15 Molecular weight=30 Total %= [100 -(40+6.66 )]=%of oxygen 100= 100 - 46.66 = 53.34% Atomic mass percent. C. 12. 40 H. 1. 6.66 O. 10. 53.34 At. Ratio. Simple ratio 40\12 =3.33. 3.33\3.33 6.66\1=6.66. 6.66\3.33 53.34\16=3.33 3.33\3.33 C:H:O =1:2:1 Empirical formula=CH2O Mass = 12+(1+2)+16 = 30 N= mol. Wt\mass of EF = 30\30=1 Then, Molecular formula=1×CH²O CH²O

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