CBSE > Class 11 > Chemistry | CBSE Board | Homework Help

In addition to carbon monoxide (CO) and carbon dioxide (CO₂) , there is a third compound of carbon called carbon suboxide. If a 2.5g sample of carbon sub-oxide contains 1.32g of C and 1.18g of O, using the law of multiple proportions, a possible formula of carbon suboxide can be deduced.

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a) 1.75 g copper gives 2.19 g copper oxide. b) 1.135 g copper gives 1.430 g copper oxide. Show that these data confirm the law of definite proportion.

Posted by Varnika Verma 3 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Roopam Almadi 3 years, 6 months ago

Value instead of vaue

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Roopam Almadi 3 years, 6 months ago

It's an easy question Don't be panic First take(a) part then, 2.19 - 1.44 = weight of O2 Then take the ratio of copper to oxygen, the ratio comes out to be 3.9 : 1 Then take (b) part 1.430 - 1.135 = weight of O2 Then take the ratio of copper to oxygen, the ratio comes out to be 3.9 : 1 In this way this data illustrate law of definate proportion Don't take approx bcz it is not allowed Take the exact vaue

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What is particle nature of electromagnetic readiation

Posted by Lakshay Malik 3 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Daksh Gamer 3 years, 6 months ago

Particle Nature-->when radiation interacts with matter

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Given density of water in 1 g/ml, find in kg/m^3

Posted by Suman Jakhar 3 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Adithya Dev A 3 years, 6 months ago

To convert g/ml to kg/m^3, we need to multiply the value with 1000. Therefore, density of water (in kg/m^3) is 1000 kg/m^3.

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Vinit Kumar 3 years, 6 months ago

1000

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Calculate the amount of water produced by the combustion of 25 g of methane

Posted by Kromyx Official 3 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Harshit Gautam 3 years, 6 months ago

You can solve it through mass mass relation

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Harshit Gautam 3 years, 6 months ago

Final answer is 28.125gm

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A sample of NaNO3 weighing 0.38 is placed in a 250ml volumetric flask .The flask is then filled with water to the mark on the neck. What is the molarity of the solution??

Posted by Kumari Shalini 3 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Ramesh S 3 years, 6 months ago

Solution : Mass of dissolved = 0.38 g
Molecular mass of
Moles of dissolved
Volume of solution =250 mL
Molarity
=0.018 M

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Convert 24 days into seconds

Posted by Suman Jakhar 3 years, 6 months ago

CBSE > Class 11 > Chemistry

4 answers

Suhani Kumari 3 years, 5 months ago

2073600 sec

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Vedant Rai 3 years, 6 months ago

2073600

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Poonam Mittewad 3 years, 6 months ago

2073600 sec.

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Poonam Mittewad 3 years, 6 months ago

2073600

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Explain difference in precision and accuracy.

Posted by Suman Jakhar 3 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Adithya Dev A 3 years, 6 months ago

Accuracy indicates how near the measurements obtained experimentally are to the true value. Whereas precision indicates how near two measurements, whether theoretically or experimentally obtained, are to each other.

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give the difference in the origin of cathode and anode rays

Posted by Daksh Pandey 3 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 3 years, 6 months ago

Cathode rays originate from the cathode whereas anode rays are not produced from the anode. They are produced from the gaseous atoms by knock out of the electrons by high speed cathode rays.

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What is the molarity of Co2

Posted by Nitin Gurjar 3 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Rajinder Saharan 3 years, 6 months ago

12 grams of carbon dioxide (molecular weight = 48) dissolved in 200 ml of water. The molarity would be (12/48) x (1000/200) which would become (0.25) x (5) = 1.25 molar.

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3×10ki power 8 /5×10ki power 9 How to solve this eqn..... My answer is wrong Please tell me

Posted by Nisha Gurjar 3 years, 6 months ago

CBSE > Class 11 > Chemistry

3 answers

Rajinder Saharan 3 years, 6 months ago

Solve this by equilisation method new method your answer is 0.06//

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Nisha Gurjar 3 years, 6 months ago

@Aditya-It is also wrong

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Adithya Dev A 3 years, 6 months ago

3 * 10^8/5 * 10^9 = 3/5 * 10^8 * 10^-9 = 0.6 * 10^-1 = 0.06.//

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Plasmodium is a slime mould Or a sporozoan?

Posted by Bhavya Kumar 3 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Rajinder Saharan 3 years, 6 months ago

Plasmodium is a sporozoan parasite that causes malaria. Whereas the plasmodium is a wall-less mass of multinucleated protoplasm of plasmodial slime molds.

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Aadhya Audichya 3 years, 6 months ago

Plasmodium is a sporozoan parasite that causes malaria. Whereas the plasmodium is a wall-less mass of multinucleated protoplasm of plasmodial slime molds.

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Suggest me the best teacher for chemistry please

Posted by Pankaj Rai 3 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Khushi Tiwari 3 years, 6 months ago

"gravity circle" is a YouTube channel where 'MRITUNJAYPANDYA19' sir teach chemistry very smoothly and understandale .. you should check out and take one class..

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Which is the easiest and hardest ch here

Posted by Krishna Thakur 3 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Anish Mishra 3 years, 6 months ago

Asked ur teachers!

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How many of you have not started 11th studies ?

Posted by Helper . 3 years, 6 months ago

CBSE > Class 11 > Chemistry

5 answers

Monika Meena 3 years, 6 months ago

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Lisha Rani 3 years, 6 months ago

1Thank You

Vikash Kumar Das 3 years, 6 months ago

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Deepti Behera 3 years, 6 months ago

10 days before I had started

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Mahak Sadhya 3 years, 6 months ago

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I'm confused to choose my coaching please guide me to the best coaching for neet.

Posted by Helper . 3 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Tanvi Sharma 3 years, 6 months ago

Byjus best h neet k liye

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Parth Thakur 3 years, 6 months ago

don't find any offline coaching (nowadays they are too online). you can go for online or digital platforms of renowned coaching like Allen , akash , catalyser. they are much better and specially for neet as neet require more self study so you will be getting more time for it. .best of luck

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From PCM stream how to become sci teacher for 5 to 10th class ..please tell me

Posted by Usha Rani Jena 3 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Aditya Jha 3 years, 6 months ago

You clear bsc in subject that you want

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How to calculate the electronic configuration of elements after the list of 35 .. at shells of klmn..

Posted by Sangamesh Pattanashetti 3 years, 7 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Write the names and ration of different velocities gases molecules

Posted by Bharath Gopi 3 years, 7 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Chapter 1 notes

Posted by Khushije Ki Ki Kyk Nain 3 years, 7 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 3 years, 7 months ago

https://mycbseguide.com/dashboard/content/417

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What are the alize

Posted by Mohan Madgundi 3 years, 7 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 3 years, 7 months ago

Alizé is a line of alcoholic drinks. It is produced in several varieties that can be consumed "neat" or can be used in mixed drinks. As of 2020, the line consists of eight vodka-based liqueurs, all of which are 16% alcohol.

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3 phenyl pent-1-ene

Posted by Shweta Maurya 3 years, 7 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Crystalline solid?

Posted by Dark ..? 3 years, 7 months ago

CBSE > Class 11 > Chemistry

2 answers

❤️Ritesh Gupta? 3 years, 6 months ago

Don't no

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Raneesh Yadav Yadav 3 years, 7 months ago

Solid in tiny crystal like partical is known as crystalline solid

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second law of thermodynamics in terms of entrophy

Posted by Hrishikesh Gohain 3 years, 7 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Study of acidity of fruit and vegetable juices

Posted by Jigyasa Kashyap 3 years, 7 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Are bhai meko koe btao ki me pdu kese meko kuch bhi smjh nahi aa rha he ????please help me yrr

Posted by Naveen Patil 3 years, 7 months ago

CBSE > Class 11 > Chemistry

5 answers

Helper . 3 years, 6 months ago

Are par jis par books hi na ho sirf telegram se pdf ho vo kese kare start?

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Scientist ..????? 3 years, 7 months ago

App sb ko dip se thanks ☺️☺️

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Mamta ... 3 years, 7 months ago

Don't worry Saransh just read chapters agar bore ho raha hai read karne ko toh see YouTube videos which ever u feel comfortable with

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Varsha Baboria 3 years, 7 months ago

Books open kro aur lg jao kaam pr bina books open kiya nhi pd sakte?

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Sidharth ($Id) 3 years, 7 months ago

Krna Kya hai..Bhai..bass jai shree ram bolo aur shuru ho jaao?

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Have you any one notes of structure of atom.......

Posted by Cb Chiranjiv 3 years, 7 months ago

CBSE > Class 11 > Chemistry

4 answers

Sidharth ($Id) 3 years, 7 months ago

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Mamta ... 3 years, 7 months ago

Chiranjiv we can't post pictures over here so contact ur classmates.

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Cb Chiranjiv 3 years, 7 months ago

I want......hand written note....

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Mamta ... 3 years, 7 months ago

This app provides us all chapter notes n if uhh want another notes then refer to this link: ------ https://www.learncbse.in/structure-atom-cbse-notes-class-11-chemistry/

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What is meant by equilibrium

Posted by Diksha ? 3 years, 7 months ago

CBSE > Class 11 > Chemistry