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  • 4 answers

Aadya Singh 5 years, 3 months ago

$ hii $

Sagar Yadav 5 years, 7 months ago

An element is defined as a pure substance that contains only one kind of particles . These particles may be atoms or molecules.

?Royal Thakur? 5 years, 7 months ago

Carryminati ka question gayb....

Arjun Kashyap 5 years, 7 months ago

An element is a species of atom having the same number of protons in its atomic nuclei.
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Sagar Yadav 5 years, 7 months ago

Compounds are pure substances containing more than one kind of elements or atoms.

Yogita Ingle 5 years, 7 months ago

Compounds – Compounds are chemical substances made up of two or more elements that are chemically bound together in a fixed ratio.

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Meghna Thapar 5 years, 7 months ago

Mass percent is used as a way of expressing a concentration or a way of describing a component in a mixture. For a solution, the mass percent is expressed as the grams of solute divided by the grams of solution, then multiplied by 100 to get a percentage. The mass percent of solute in solution is 9.09 %.

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Deepanshu Dhankhar 5 years, 7 months ago

The number corresponding to a mole .It is the number of carbon-12 atoms is exactly 12g of carbon-12. Approx 6.022×10'²³
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The Innocent Boy ?? 5 years, 7 months ago

Thnks bro

?Royal Thakur? 5 years, 7 months ago

Same to you... ?
  • 1 answers

Atul Kumar 5 years, 7 months ago

A dippole movement is a measurement of separation of two opposite electrical charges . It is a vector quantity . The magnitude is equal to the charge multiplied by the distance between charges and the direction is from negative charge to positive charge :μ=q . r
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The Innocent Boy ?? 5 years, 7 months ago

Ok bro
  • 2 answers

Reena Rana 5 years, 7 months ago

Aqua regia is a solution which contanin 3part of HCL and 1part of H2SO4

?Royal Thakur? 5 years, 7 months ago

No one ?
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Reena Rana 5 years, 7 months ago

These are waves and these waves transfer energy without touching actually

Anurag Jha 5 years, 7 months ago

Transfer of energy without being in touch with the object in which energy got transfered
  • 1 answers

Pratyush Kumar Vidhyarthi 5 years, 7 months ago

Kapda kharab ho jaega
  • 1 answers

Sia ? 4 years, 7 months ago

Energy = hc/wavelength
= 6.63 × 10-27 × 3 × 10^10/ 5.89 × 10-5
= 3.37 × 10-12

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Sia ? 4 years, 7 months ago

2 moles of AgNO3 react with 1 mole of MgCl2.
Therefore, 0.00075 moles of AgNO3 will react with (1/2) x 0.00075 = 0.000375 moles of MgCl2AgNO3 is the limiting reagent.Number of moles of AgCl formed = number of moles of AgNO3 used = 0.00075
Molar mass AgCl = 107.86 + 35.45 = 143.31 g/molMass of 0.00075 moles of AgCl = 0.00075 x 143.31 = 0.107 g

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Pratyush Kumar Vidhyarthi 5 years, 7 months ago

By using calculator

Yogita Ingle 5 years, 7 months ago

Mass of an electron = 9.1 x 10-28 g

Or

9.1 x 10-28 g contains = 1 electron

Therefore 1g contains = 1/9.1 x 10-28 *1 = 1.098 x 1027 electrons

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Achyut Mishra 5 years, 7 months ago

Rasayan shastra, rastantra, ras kriya, rasvidya

Reena Rana 5 years, 7 months ago

Basically chemistry is the science of atoms and molecules

Diwakar Khandelwal 5 years, 7 months ago

It is a scientific discipline, involving with elements and compounds composed of atom, molecule and ions, their compositions, structure, properties,behaviour and the changes they undergo during a reaction with other substance.

Pratyush Kumar Vidhyarthi 5 years, 7 months ago

Chemistry ek aisa subject hai jisse mera kabhi baat nahi bana
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Meghna Thapar 5 years, 7 months ago

For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom. The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D). The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope.

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Meghna Thapar 5 years, 7 months ago

During prophase, the chromosomes become highly condensed, and the centrosomes begin to separate. The movement of the chromosomes towards the poles occurs during anaphase A, and the two spindle poles separate during anaphase B. The nuclear envelope begins to reform and the DNA begins to decondense during telophase.

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Pk . 5 years, 7 months ago

Baki sab family me kaise hai.....virus ka kya asar hai???

? ????? ?????? ? 5 years, 7 months ago

Hmmm... Shi h bro... Bs 2 sal to aur bcche h scl ke...
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Pk . 5 years, 7 months ago

Environment change kar rahe yrr....taki focus kar sake study pe?

? ????? ?????? ? 5 years, 7 months ago

Same bro mera I. T me 4 tha.,, maths me 2 baki sb me 3 ...

? ????? ?????? ? 5 years, 7 months ago

Mera to result pe depend krta h yha padna ya nhi lekin mai yhi pana chahta hu.... Aap kyu scl change krr rhe ho... Hum logo ka teen section tha lekin boys girls dono the ek section me mere section me 13 girls thi aur 38 boys...

Pk . 5 years, 7 months ago

Mathematic me set 2, social science me 3 english me 3 ....aur baki yad nahi.....set ho bhi ho rock kar ke aye yrr.....apki overall kaisa gaya ??? Hope bahot acha gaya hoga.....ab result bhi jaldi aa jay
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? ????? ?????? ? 5 years, 7 months ago

Aapka set kon sa tha

? ????? ?????? ? 5 years, 7 months ago

Mai hu...

? ????? ?????? ? 5 years, 7 months ago

Mere yha bhi nhi hui thi bde kadak teacher the... Sirf maine I. T me ek ladke ko btaya tha... Usne mujhe sst ka map btaya tha geography wala... History wala aa rha... Geography ka map maine pda he nhi tha...

Pk . 5 years, 7 months ago

Bhai.....sing kar ke id apne hi banaya hai ......ya phir aadya hai
  • 1 answers

Pk . 5 years, 7 months ago

Approx 4:00 am

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