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

Radiation with greater frequency than Vo (minimum frequency) when strike on a metal surface then electon are ejected out of metal surface. This phenomenon is called photoelectric effect

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Why is atomic mass unit define by carbon 12 isotope?

Posted by Biky Das 6 days, 4 hours ago

CBSE > Class 11 > Chemistry

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If 100g of N2 reacts with 60g of H2 to form NH3 then determine: a. Limiting Reagent b. Amount of Excess Reagent c. Amount of NH3 formed

Posted by Aryaman Maurya 1 week ago

CBSE > Class 11 > Chemistry

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Write the atomic mass of Iron

Posted by Thakur Nitin Singh 1 week, 3 days ago

CBSE > Class 11 > Chemistry

2 answers

Aryan . 2 days, 6 hours ago

56μ

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Aryaman Maurya 1 week ago

56u

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What u means

Posted by Anurag Yadav 2 weeks, 4 days ago

CBSE > Class 11 > Chemistry

1 answers

Harshika . 4 days, 4 hours ago

Unit

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Determine the empirical formula of an oxide of iron which has 69.9 % iron and 30.1% dioxygen by mass.

Posted by Manish Kumar 2 weeks, 5 days ago

CBSE > Class 11 > Chemistry

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Vikas Jha 2 weeks, 2 days ago

Fe203

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Ankit Sharma 2 weeks, 2 days ago

Very good

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How many grams of diamond have been present in 0.1 mole of diamond ring

Posted by Zainab Ara 3 weeks, 1 day ago

CBSE > Class 11 > Chemistry

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Sonali Singh 3 weeks ago

No. Of moles = weight/molar mass Molar mass of daimond=12 0.1=weight (g)/12 Weight of daimond=1.2g

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Define rutherford model of atom

Posted by Durgesh Kuntal Nishantkuntal 3 weeks, 4 days ago

CBSE > Class 11 > Chemistry

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Muskan Saha 3 weeks, 2 days ago

Rutherford model proposed that the negative charge electrons around the nucleus of an atom.

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What will be the mass of CO2gas containing the same no. of molecules as in 2 L of Oxygen gas at STP

Posted by Dhruv Makkar 4 weeks ago

CBSE > Class 11 > Chemistry

1 answers

Adithya Dev 3 weeks, 6 days ago

2 L of O2 means 2L / 22.4 L (molar volume) = 0.089 moles of O2. So, from this, we can calculate mass of CO2 as m = No of moles of O2 × 44g = 0.089 × 44 = 3.92 g. // Hope this helps !!!!

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What will be the mass of CO2gas containing the same no. of molecules as in 2 L of Oxygen gas at ST

Posted by Dhruv Makkar 4 weeks ago

CBSE > Class 11 > Chemistry

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Notes according to syllabus of chapter 1 Some basic concepts of chemistry

Posted by Anshika Singh Chauhan Thakur 1 month ago

CBSE > Class 11 > Chemistry

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20 g of NaOH molecules weight 40u is dissolved in 2lit solution what is its molarity

Posted by Muskan Gupta 1 month ago

CBSE > Class 11 > Chemistry

3 answers

Aashna Meena 4 days, 15 hours ago

0.25Molar

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Sonali Singh 3 weeks ago

0.25M

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Samrat Das 1 month ago

0.5 m

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How is matter classified at macroscopic level

Posted by Yash Agrawal 1 month ago

CBSE > Class 11 > Chemistry

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Muskan Saha 1 month ago

At microscopic level it can be classified as solid, liquid,gas.These are the three physical state of matter. these three state of matter and interconvert able by changing the condition of temperature and pressure. at microscopic level matter can be classified as pure substan and mixtures

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Calculate the mass of glucose in 500g solution if it contains 68% by mass of bottle

Posted by Mangaldeep Patel 1 month, 2 weeks ago

CBSE > Class 11 > Chemistry

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Calculate the number of oxygen atoms in 9.8 grams of H2SO4

Posted by Vanshika Yadav 1 month, 2 weeks ago

CBSE > Class 11 > Chemistry

2 answers

Ajay Maurya 1 month, 2 weeks ago

Is it correct?

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Ajay Maurya 1 month, 2 weeks ago

0.0653NA

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What is the Difference between morality and molality?

Posted by Krishna Chaudhary 1 month, 3 weeks ago

CBSE > Class 11 > Chemistry

3 answers

Muskan Saha 1 month ago

Molality - the molality refers to the number of moles of a solute per mass of a solvent. Molarity - molarity refers to the number of moles of a solute per volume of a solution.

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Ojasvi Upadhyay 1 month, 2 weeks ago

Molarity is defined as the no of moles of solute present in 1 litre of solution Molality refers to the no of moles of solute present in 1 kg of solvent

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Arpita Singh 1 month, 3 weeks ago

I don't even know the answer

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Calculate molarity and molality of the sulphesic acid solution of density 1.198 g cm³ containing 27% by mass of sulphesic acid

Posted by Shintu Yadav 1 month, 3 weeks ago

CBSE > Class 11 > Chemistry