What is Molecular Mass?

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Chandan Asked Aug 2, 2023

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Chandan Asked Oct 6, 2023

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When 10 gm of a non-volatile solute is dissolved in 100 gm of benzene its boiling point raised by 1º. What is the molecular mass of solute?

Chandan Asked Oct 6, 2023

by Chandan

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Aayush Asked Feb 1

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Caffeine has a molecular weight of 194 . It contains about 30% by mass of nitrogen. The number of atoms of nitrogen in one molecule of it is :

Aayush Asked Feb 1

by Aayush

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Aayush Asked Feb 1

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An organic compound on analysis was found to contain 0.032% of Sulphur by mass. The molecular mass of the compound, if its one molecule contains two Sulphur atoms, is :

Aayush Asked Feb 1

by Aayush

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Shakti Asked Dec 20, 2021

163 views

A gaseous mixture is composed of equal number of moles of CH4, C2H5 and C2H2. The average molecular mass of mixture (in amu) is

Shakti Asked Dec 20, 2021

by Shakti

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4 Votes

163 Views

Shakti Asked Dec 20, 2021

57 views

5.6 liters of gas at STP are found to have a mass of $11 \mathrm{~g}$. The molecular mass of the gas is

Shakti Asked Dec 20, 2021

by Shakti

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6 Votes

57 Views

Chandan Asked Aug 2, 2023

52 views

What is Molecular Weight?

Chandan Asked Aug 2, 2023

by Chandan

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52 Views

Aayush Asked Feb 22

49 views

What is the mass of 4 moles of aluminum atoms?

Aayush Asked Feb 22

by Aayush

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49 Views

Aayush Asked Feb 22

34 views

What is the mass of 5 mole of ammonia?

Aayush Asked Feb 22

by Aayush

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Aayush Asked Feb 2

52 views

If 6.3 g of NaHCO3 are added to 15.0 g of CH3COOH solution, the residue is found to weight 18.0 g. What is the mass of CO2 released in this reaction?

Aayush Asked Feb 2

by Aayush

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Chandan Asked Oct 6, 2023

82 views

Cu-63 isotope is 69.09% and Cu-65, 30.91% in a copper atom. If the mass of ${ }^{63} Cu$ isotope is 62.9298 amu, what must be the mass of ${ }^{63} Cu$ isotope given that atomic mass of copper is 63.546 amu?

Chandan Asked Oct 6, 2023

by Chandan

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ALOK_RAJ Asked Aug 6, 2023

295 views

On the basis of molecular orbital theory what are the similarities between

ALOK_RAJ Asked Aug 6, 2023

by ALOK_RAJ

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ALOK_RAJ Asked Nov 19, 2023

171 views

A solution contains 0.18g per mL of a substance X whose molecular weight is

ALOK_RAJ Asked Nov 19, 2023

by ALOK_RAJ

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ALOK_RAJ Asked Oct 5, 2023

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According to molecular orbital theory which of the following statements about the magnetic character and bond order is correct regarding O2+?

ALOK_RAJ Asked Oct 5, 2023

by ALOK_RAJ

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1 Vote

121 Views

ALOK_RAJ Asked Oct 5, 2023

100 views

Three of the following formula might be empirical or molecular formula but one of the four must be a molecular formula. That one is :

ALOK_RAJ Asked Oct 5, 2023

by ALOK_RAJ

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100 Views

Chandan Asked Sep 29, 2023

243 views

The vapour density of a chloride of a metal is 81.5 (H=1) and the chloride contains 34.46 % metal. The specific heat of the metal is 0.115. Calculate the exact atomic weight and molecular formula of chloride.

Chandan Asked Sep 29, 2023

by Chandan

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243 Views

Chandan Asked Aug 9, 2023

67 views

Haemoglobin contains 0.25 % iron by weight. The molecular weight of Hemoglobin is 89600 u. Calculate the weight of K4[ Fe (CN)_{6}] that can be produced

Chandan Asked Aug 9, 2023

by Chandan

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67 Views

ANAND_YADAV Asked Aug 8, 2023

159 views

If the number of molecules of SO2 (molecular weight =64 ) effusing through an orifice of unit area of cross-section in unit time at 0∘C and 1 atm pressure is n

ANAND_YADAV Asked Aug 8, 2023

by ANAND_YADAV

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159 Views

ANAND_YADAV Asked Aug 8, 2023

233 views

The ratio of the rate of diffusion of a given element to that of helium is 1.4. The molecular weight of the element is (under same temperature and pressure)

ANAND_YADAV Asked Aug 8, 2023

by ANAND_YADAV

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ANAND_YADAV Asked Aug 7, 2023

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If x-axis is the molecular axis, then π -molecular orbitals are formed by the overlap of

ANAND_YADAV Asked Aug 7, 2023

by ANAND_YADAV

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77 Views

ANAND_YADAV Asked Jul 30, 2023

119 views

61.25% (w/w) H2SO4 stock solution has a density of $1.6 g mL ^{-1}$. The molecular weight of H2SO4 is $98 g mol ^{-1}$. The volume $( mL )$ of stock solution required to prepare a 200 mL solution of 0.3 M H2SO4 is :

ANAND_YADAV Asked Jul 30, 2023

by ANAND_YADAV

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Barjes Yadav Asked Feb 22

30 views

What is the momentum of an object of mass m, moving with a velocity v?

Barjes Yadav Asked Feb 22

by Barjes Yadav

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Aayush Asked Feb 20

56 views

What is the acceleration produced by a force of 12 newtons exerted on an object of mass 3 kg?

Aayush Asked Feb 20

by Aayush

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Aayush Asked Feb 20

72 views

Mass of a body is 5 Kg. What is its weight?

Aayush Asked Feb 20

by Aayush

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0 Votes

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ANAND_YADAV Asked Aug 1, 2023

110 views

What is Centre of Mass?

ANAND_YADAV Asked Aug 1, 2023

by ANAND_YADAV

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Aayush Asked Feb 1

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Which one is the best example of law of conservation of mass?

Aayush Asked Feb 1

by Aayush

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Aayush Asked Jan 31

50 views

A sample of oxygen containing 4/Ν_Α mol of oxygen is represented on a Y-map where its volume at NTP, mass of the sample and number of particles are shown. Study the map & choose the correct option.

Aayush Asked Jan 31

by Aayush

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Aayush Asked Jan 31

161 views

1.5 x 10^22 atoms of an element weight about 0.9 g. The atomic mass of the element (in amu) is —

Aayush Asked Jan 31

by Aayush

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161 Views

Aayush Asked Jan 30

61 views

75 mL of H2SO4 solution (specific gravity = 1.18), containing 49% H2SO4 by mass, is diluted to 590 mL. Calculate molarity of the diluted solution.

Aayush Asked Jan 30

by Aayush

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Chandan Asked Sep 15, 2023

94 views

Two faraday's of electricity are passed through a solution of CuSO4. The mass of copper deposited at the cathode is (at. mass of Cu=63.5 amu)

Chandan Asked Sep 15, 2023

by Chandan

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Chandan Asked Sep 15, 2023

214 views

Two elements X (at. mass =16) and Y (at. mass =14) combine to form compounds A, B and C. The ratio of different masses of Y which combines with a fixed mass of X in A, B and C is 1: 3: 5.

Chandan Asked Sep 15, 2023

by Chandan

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214 Views

Chandan Asked Aug 7, 2023

115 views

The mass of half mole of electrons is about : (Given : Mass of Electron = 9.1 × 10^-28g)

Chandan Asked Aug 7, 2023

by Chandan

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test Asked Jun 8, 2022

109 views

An element is found in nature in two isotopic forms with mass numbers (A-1) and (A+3).

test Asked Jun 8, 2022

by test

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2 Votes

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test Asked Jun 8, 2022

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The minimum molar mass of a compound containing 3.2 % oxygen by mass is

test Asked Jun 8, 2022

by test

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2 Votes

101 Views

Aayush Asked Feb 2

50 views

A, B and C elements have the oxidation number of +6, -2 and -1 respectively. The possible molecular formula when these atoms combine can be —

Aayush Asked Feb 2

by Aayush

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Aayush Asked Jan 5

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20mL of a gaseous hydrocarbon was exploded with excess of oxygen and the mixture cooled. There was a contraction of 40mL. On treatment with KOH, there was a further contraction of 40mL. Deduce the molecular formula of hydrocarbon.

Aayush Asked Jan 5

by Aayush

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What is Molecular Mass?

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