मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

Calculate the molecular mass of the following in u. CH3COOH - Chemistry

Advertisements
Advertisements

प्रश्न

Calculate the molecular mass of the following in u.

CH3COOH

संख्यात्मक
Advertisements

उत्तर

Molecular mass of CH3COOH = (2 × Average atomic mass of C) + (4 × Average atomic mass of H) + (2 × Average atomic mass of O)
= (2 × 12.0 u) + (4 × 1.0 u) + (2 × 16.0 u)
= 60 u

The molecular mass of CH3COOH = 60 u

shaalaa.com
Atomic and Molecular Masses
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Some Basic Concepts of Chemistry - Exercises [पृष्ठ ११]

APPEARS IN

बालभारती Chemistry [English] Standard 11 Maharashtra State Board
पाठ 1 Some Basic Concepts of Chemistry
Exercises | Q 2. (D)(b) | पृष्ठ ११

संबंधित प्रश्‍न

Choose the correct option.

Which of the following has maximum number of molecules?


Calculate the molecular mass of the following in u.

NH3


Calculate the molecular mass of the following in u.

C2H5OH


What is the ratio of molecules in 1 mole of NH3 and 1 mole of HNO3?


Solve problem:

The mass of an atom of hydrogen is 1.008 u. What is the mass of 18 atoms of hydrogen?


Solve problem:

Arjun purchased 250 g of glucose (C6H12O6) for Rs 40. Find the cost of glucose per mole.


Solve the problem:

The natural isotopic abundance of 10B is 19.60% and 11B is 80.40 %. The exact isotopic masses are 10.13 and 11.009 respectively. Calculate the average atomic mass of boron.


Solve problem:

Calculate the number of atoms of the following. (Average atomic mass : N = 14 u, S = 32 u)

0.4 mole of nitrogen


Solve problem:

Calculate the number of moles of magnesium oxide, MgO in

  1. 80 g, and
  2. 10 g of the compound.

(Average atomic masses of Mg = 24 and O = 16)


Calculate the number of atoms of hydrogen present in 5.6 g of urea, \[\ce{(NH2)2CO}\]. Also calculate the number of atoms of N, C, and O.


Solve problem:

Calculate the mass of sulfur dioxide produced by burning 16 g of sulfur in excess of oxygen in the contact process. (Average atomic mass : S = 32 u, O = 16 u)


Explain formula mass with an example.


An element X has the following isotopic composition 200X = 90%, 199X = 8% and 202X = 2%. The weighted average atomic mass of the element X is closest to


Two 22.4 litre containers A and B contains 8 g of O2 and 8 g of SO2 respectively at 273 K and 1 atm pressure, then


What is the mass of precipitate formed when 50 ml of 8.5% solution of AgNO3 is mixed with 100 ml of 1.865% potassium chloride solution?


Which one of the following is used as a standard for atomic mass.


Define relative atomic mass.


Calculate the average atomic mass of naturally occurring magnesium using the following data.

Isotope Isotopic atomic mass Abundance (%)
Mg24 23.99 78.99
Mg25 24.99 10.00
Mg26 25.98 11.01

An element has a bee structure with cell edge of 288 pm. The density of element is 7.2 g cm-3. What is the atomic mass of an element?


Boron has two isotopes 10B and 11B with atomic masses 10 and 11, respectively. If its average atomic mass is 10.81, the abundance of 10B is ____________.


How many moles of ammonia are present in 5.6 cm3 of ammonia gas at STP?


What is the average mass of an element if it has two isotopes, one of mass 6.015 u with 8.24 % and other of mass 7.016 u with 91.26% respectively?


One amu is equal to ________.


A 100 g of sample of haemoglobin on analysis was found to contain 0.34% Fe by mass. If each haemoglobin molecule has four Fe2+ ions, the molecular mass of haemoglobin is: (Fe = 56 amu)


0.05 F electricity is passed through CuSO4 solution. Calculate the mass of Cu produced at cathode? (molar  mass of Cu = 63.5 g mol-1)


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×