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what is the concentration of sugar in mole per litre if its 20 gram are dissolved in water to make a final volume of 2 litre

Posted by Parth Gandhi 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

Molarty of a solution is given by ,
Molarity (M) = ( Number of moles of the solute ) / ( Volume of solution in Litres )
Molar mass of sugar (C₁₂H₂₂O₁₁) = 12 {tex}\times{/tex}12 + 22 {tex}\times{/tex} 1 {tex}\times{/tex} 11 {tex}\times{/tex} 16 = 342 g mol^-1
No. of moles in 20 g of sugar = ( Mass of sugar ) / ( molar mass of sugar ) = {tex}\frac{20 \mathrm{g}}{342 \mathrm{g} \mathrm{mol}^{-1}}{/tex} = 0.0585 moles
Thus,
Molar concentration or Molarity (M) = 0.0585 mol / 2L = 0.02925 mol L^-1

ANSWER

Convert 2 M H2SO4 into g/L.

Posted by Riya Mahapatra 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is electromagnetic waves and what is the main characteristics of electromagnetic waves?

Posted by Arpan Kumar 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Tripti Rawat 6 years, 6 months ago

Electromagnetic waves are waves that are created as a result of vibrations between an electric field and a magnetic field.
Characteristics of electromagnetic waves:

Electromagnetic waves are produced by accelerating or oscillating charge.
E.M. waves do not require any material medium for their propagation.
E.M. waves travel in free space with a velocity {tex}C = \frac{1}{{\sqrt {{\mu _0}{\varepsilon _0}} }}{/tex} which is equal to the velocity of light {tex}(c = 3 \times {10^8}m/s){/tex}.
E.M. waves are transverse in nature.

ANSWER

Relation between molarity and molality

Posted by Thakur Nobody 6 years, 6 months ago

CBSE > Class 11 > Chemistry

3 answers

Thakur Nobody 6 years, 6 months ago

Thankyou Rishab jain you answered it in one word only what a presence of mind you have??

Thakur Nobody 6 years, 6 months ago

Molarity is defined as number of moles divided by the volume (in liters). Molality is defined as the number of moles divided by the mass of the solution (in kg). molality = no. of moles of solute/ wt. of solvent. if density of solvent is given we can find out relation between molality and morality

Rishab Jain 6 years, 6 months ago

Chemistry

ANSWER

Explain the line spectrum of hydrogen in 2to 3 lines

Posted by Sakshi Gupta 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

What is homogeneous system in Thermodynamics?

Posted by Swati Singh 6 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Thakur Nobody 6 years, 6 months ago

Homogeneous and heterogeneous thermodynamic systems A homogeneous thermodynamic system is defined as the one whose chemical composition and physical properties are the same in all parts of the system, or change continuously from one point to another. ... The homogeneous bodies of a heterogeneous system are referred to as phases.

Yogita Ingle 6 years, 6 months ago

Homogeneous system: A system is said to be homogeneous if all the constituents present are in the same phase and the composition of the system is uniform throughout.

ANSWER

171 g of cane sugar are dissolved in 1000g of water at 30 degreeC if density of solution is 1.1g/ml,then

Posted by Sunil Yadav 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Inactive ingredients 500 mg: Colloidal Silicon Dioxide, Corn Starch, Lactose Monohydrate, Magnesium Stearate, Microcrystalline Cellulose, Polyvinylpyrrolidone, Sodium Starch Glycolate, and Titanium Dioxide. Film Coating and Polishing Solution contains: D&C Red #27 Aluminum Lake, D&C Yellow #10 Aluminum Lake, FD&C Blue #1 Aluminum Lake, Hypromellose, Polyethylene Glycol, Polysorbate 80 and Titanium Dioxide.

Posted by Himanshu Choubey 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Compare the strength of 1M and 1m aqueous solution of glucose.(density of water is 1 g/ ml).

Posted by Riya Mahapatra 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

A 1 molar solution is a solution in which 1 mole of a compound is dissolved in a total volume of 1 litre.
Molality, also called molal concentration, is a measure of the concentration of a solute in a solution in terms of amount of substance in a specified amount of mass of the solvent.
1 molar aqueous solution is more concentrated than 1 molal aqueous solution .
1 molar solution contain 1 mole of solute in 1 litre of the solution which include both solute and solvent.

ANSWER

Why there is no ideal any gases

Posted by Shubhajit Ghosh 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

De brogile equation

Posted by Zahira Malik 6 years, 6 months ago

CBSE > Class 11 > Chemistry

3 answers

Supan Das 6 years, 6 months ago

Hello bro.please dont mind you have many sources of education .so if you any problem / doubt related to your study then can search in google ,youtube ....you will get instant answer then why are you ask question here which takes lots of time to get answer

Esha Pal 6 years, 6 months ago

Wavelength=h/mv=h/p where h is Planck's constant, p is momentum

Aditya Narayan Singh 6 years, 6 months ago

Wavelength= h/mv

ANSWER

Alcohol and phenol concepts full revision

Posted by N S Lavannyashree 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Write down the relation between empirical formula and molecular formula.

Posted by Debdeep Das 6 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Kartikey Saxena 6 years, 6 months ago

Molecular Formula= n × empirical formula where n = Molar mass/ empirical formula mass

Thakur Nobody 6 years, 6 months ago

Molecular formulas tell you how many atoms of each element are in a compound, and empirical formulas tell you the simplest or most reduced ratio of elements in a compound. If a compound's molecular formula cannot be reduced any more, then the empirical formula is the same as the molecular formula

ANSWER

The term energy level is same as orbit in an atom???

Posted by Preeti Rahi 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

A shample of Naoh weighting 0.38gm is dissolve in water and the solution os made to 50.0ml in a volumetric flask. What is the molarity of the resulting solution

Posted by Mohd Shoil 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Ranjeet Kumar 6 years, 6 months ago

Molar mass of NaOH = 40g/mol Moles of NaOH in solution(n) = 0.38g ÷ 40g/mol = 0.01 mol Volume in litres V(L) = 50/1000 L Molarity = n/ V(L) =(0.01/ 50)×1000 mol/L = 0.2 mol/L

ANSWER

What is bond angle qnd formal charge

Posted by Kaley Soni 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

unit of zero , one, two , three order of reaction

Posted by Satyam Krishna 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

convert 373 k into c

Posted by Mubin Nagari 6 years, 6 months ago

CBSE > Class 11 > Chemistry

3 answers

Isha Bansal 6 years, 6 months ago

Answer is 100℃

Thakur Nobody 6 years, 6 months ago

Exact Is subtracting 273.15 from kelvin So answer is 99.85 degree centigrade

Kaley Soni 6 years, 6 months ago

Subtract 273 in kelvin and the answer is 373-273=100°c

ANSWER

1g of hydrogen contains 6*10raise to power 23 atoms. Atomic wt of helium is 4. It follows that the number of atoms in 1g of He is?

Posted by Sunil Yadav 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Kuki Reddi 6 years, 6 months ago

Xfud6kd

ANSWER

what is difference between electron gain enthalpy and electronegativity

Posted by Lone Tufail 6 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Esha Pal 6 years, 6 months ago

For detail answer see in the book modern's abc chemistry part 1 chapter3

Thakur Nobody 6 years, 6 months ago

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. The Pauling scale is the most commonly used. While Electron gain enthalpy is defined as the amount of energy released when an electron is added to an isolated gaseous atom. During the addition of an electron, energy can either be released or absorbed. Sign Convention For Electron Gain Enthalpy: Negative: When energy is released while accepting an electron. Positive: When energy is supplied to an atom while adding an electron

ANSWER

calculate the energy required to excite the electron in the atom from n=1 ton=2 .theionization enthalpy of hydrigen atom is 1.312*1000000 J mol-1

Posted by Pankaj Singh 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

If electromagnetic wavelength 230 nm is just sufficient to ionize the lithium atom, then ionization energy of lithium atom in KJmol^-1 will be approximately Give me full solution of this question

Posted by Amira Verma 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Mass of an electron is x times to mass of a hydrogen atom.The approximate value of x is Plzz ans this question fastly

Posted by Amira Verma 6 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Amira Verma 6 years, 6 months ago

1/1837 is correct ans but i donot know how

Albert Einstein 6 years, 6 months ago

1/1838

ANSWER

What is ionic radii

Posted by Ravi Nathera 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 6 years, 6 months ago

Distance between centre of nucleus to outermost shell of an ions is called ionic radius.

ANSWER

Vsq for chapter 3

Posted by Ravi Nathera 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Thakur Nobody 6 years, 6 months ago

Kya kehna cahte ho babu

ANSWER

Ncert solution of ch2

Posted by Ranjeet Mishra 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 6 years, 6 months ago

Check NCERT solutions here : <a href="https://mycbseguide.com/ncert-solutions.html">https://mycbseguide.com/ncert-solutions.html</a>

ANSWER

What is atomic number

Posted by Pawan Sharma 6 years, 6 months ago

CBSE > Class 11 > Chemistry

2 answers

Devil ? 6 years, 6 months ago

Protons present in the nucleus of the atom..

Omkar Singh Omkar Singh 6 years, 6 months ago

atomic no. is defined as The total no. of electron or proton present in a atom, is called atomic no.

ANSWER

What is dative bond?

Posted by Dimple Bawa 6 years, 6 months ago

CBSE > Class 11 > Chemistry

1 answers

Arpit Verma 6 years, 6 months ago

An example of a dative covalent bond is provided by the interaction between a molecule of ammonia, a Lewis base with a lone pair of electrons on the nitrogen atom, and boron trifluoride, a Lewis acid by virtue of the boron atom having an incomplete octet of electrons.

ANSWER

If 2L of N2 is mixed with 2L of H2 at a constant temperature and pressure, then what will be the volume of NH3 formed

Posted by Sundarm Jha 6 years, 6 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

How many number of atoms are present in 52u of Helium

Posted by Sundarm Jha 6 years, 6 months ago

CBSE > Class 11 > Chemistry

3 answers

Rohan Kumar 6 years, 6 months ago

13 atoms

It'Ş.Mə. Sshăvî_ 6 years, 6 months ago

13 atoms

Jashan Aulakh 6 years, 6 months ago

4u of helium = 1 atom 1u of helium = 1/4 atom 52u of helium =52×1/4 =13 atoms

ANSWER

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