Advertisements
Advertisements
प्रश्न
A hydrocarbon contains 4.8g of carbon per gram of hydrogen. Calculate the gram atom of each.
उत्तर १
The g atom of carbon = 4.8/12 = 0.4 and g atom of hydrogen = 1/1=1
उत्तर २
| Element | % age wt. | At wt. | Relative no of moles | Simple ratio of atoms |
| C | 4.8 | 12 | `4.8/12` = 0.4 | `0.4/0.4` = 1 |
| H | 1 | 1 | `1/1` = 1 | `1/0.4` = `10/4` |
∴ gram atom of C = 0.4 and H = 1.
APPEARS IN
संबंधित प्रश्न
A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight.
An ion with mass number 37 possesses one unit of negative charge. If the ion contains 11.1% more neutrons than the electrons, find the symbol of the ion.
An ion with mass number 56 contains 3 units of positive charge and 30.4% more neutrons than electrons. Assign the symbol to this ion.
Define atomic mass of an element.
What is meant by saying that 'the atomic mass of oxygen is 16' ?
What is meant by atomic mass number?
Define the following form:
Atomic mass number
The relative atomic mass of Cl atom is 35.5 a.m.u. Explain this statement.
Explain the following:
An element has atoms with different mass numbers.
Write down the mass number of the atom having 20 neutrons and 15 protons.
Select the correct answer from the answer in the bracket to complete the sentence.
An element has electronic configuration 2, 8, 1 and 12 neutrons. Its mass no. is ________.
Select the correct answer from the answer in the bracket to complete the sentence.
An atom with electronic configuration 2, 7 and mass number 19 will have ________ neutrons.
Draw the structure of oxygen and sulphur atoms.
Noble gases are Diatomic.
Answer the following question using the data given below:
- Assertion: The Relative Atomic mass of aluminium is 27
- Reason: An atom of aluminium is 27 times heavier than 1/12th of the mass of the C – 12 atom.
What are the postulates of Bohr’s model of an atom?
An atom having atomic mass number 13 has 7 neutrons. What is the atomic number of the atom?
Atoms are so tiny their mass number cannot be expressed in grams but expressed in ______.
