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

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

Advertisements
Advertisements

प्रश्न

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

बेरीज
Advertisements

उत्तर

One mole of any substance contains particles equal to 6.022 × 1023.
1 mole of NH3 = 6.022 × 1023 molecules of NH3
1 mole of HNO3 = 6.022 × 1023 molecules of HNO3
∴ Ratio = `(6.022xx10^23)/(6.022xx10^23)` = 1:1
The ratio of molecules is = 1:1

shaalaa.com
  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 4. (A) | पृष्ठ ११

संबंधित प्रश्‍न

Choose the correct option.

Which of the following has maximum number of molecules?


The number of molecules in 22.4 cm3 of nitrogen gas at STP is ______.


Which of the following has the largest number of atoms?


Calculate the molecular mass of the following in u.

CH3COOH


Calculate the molecular mass of the following in u.

C2H5OH


Solve problem:

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


Solve problem:

Calculate the number of an atom of the following (Given: Atomic mass of I = 127 u).

254 u of iodine (I)


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 the need of the term average atomic mass.


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


Which of the following is/are true with respect to carbon-12.


Define relative atomic mass.


The reaction between aluminium and ferric oxide can generate temperatures up to 3273 K and is used in welding metals.
(Atomic mass of Al = 27 u Atomic mass of O = 16 u)
\[\ce{2Al + Fe2O3 -> Al2O3 + 2Fe}\]; If, in this process, 324 g of aluminium is allowed to react with 1.12 kg of ferric oxide.

  1. Calculate the mass of Al2O3 formed.
  2. How much of the excess reagent is left at the end of the reaction?

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?


The unit of atomic mass, amu is replaced by u, here u stands for ______.


One amu is equal to ________.


Calculate mass of 3.01 × 1024 atoms of an element having atomic mass 21.13.


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×