Chemistry
Grade-9
Easy
Question
Atomic mass unit is defined as the number
mass of atom of O−12 atom isotope- mass of atom of c−12 atom isotope
- mass of atom of H-2 atom isotope
- mass of atom of C−14 atom isotope
mass of atom of O−12 atom isotope mass of atom of c−12 atom isotope mass of atom of H-2 atom isotope mass of atom of C−14 atom isotope
Hint:
Atomic mass unit is equal to one-twelfth of the mass of an unbound atom of carbon-12.
The correct answer is: mass of atom of c−12 atom isotope
- An atomic mass unit or AMU is a physical constant equal to one-twelfth of the mass of an unbound atom of carbon-12.
- It is a unit of mass used to express atomic masses and molecular masses.
- 1/12 mass of atom of c−12 atom isotope.
Related Questions to study
Chemistry
___________ are atoms that have the same atomic number but a different mass number.
___________ are atoms that have the same atomic number but a different mass number.
ChemistryGrade-9
Chemistry
1 mole of the molecule is also named as
1 mole of the molecule is also named as
ChemistryGrade-9
Chemistry
How many atoms are contained in 1 gm of the element A, which has the mass of the same atom as 3.9854 × 10-23?
How many atoms are contained in 1 gm of the element A, which has the mass of the same atom as 3.9854 × 10-23?
ChemistryGrade-9
Chemistry
1 mole of ‘P’ molecule has how many atoms?
1 mole of ‘P’ molecule has how many atoms?
ChemistryGrade-9
Chemistry
1 mole of the water molecule has
1 mole of the water molecule has
ChemistryGrade-9
Chemistry
What is the gram atomic mass of Cl?
What is the gram atomic mass of Cl?
ChemistryGrade-9
Chemistry
What is the gram atomic mass of S?
What is the gram atomic mass of S?
ChemistryGrade-9
Chemistry
What is the mass of one molecule of oxygen?
What is the mass of one molecule of oxygen?
ChemistryGrade-9
Chemistry
What will be the mass of 5 moles of SO2?
What will be the mass of 5 moles of SO2?
ChemistryGrade-9
Chemistry
How many molecules of CO2 are present when 5 moles of CO2 are present in the gaseous sample?
How many molecules of CO2 are present when 5 moles of CO2 are present in the gaseous sample?
ChemistryGrade-9
Chemistry
How many moles of Cu is present in the 6.0222 × 1024 atom?
How many moles of Cu is present in the 6.0222 × 1024 atom?
ChemistryGrade-9
ESS
Which visible motion can be explained by a geocentric model?
Which visible motion can be explained by a geocentric model?
ESSGrade-9
ESS
Which of the following statement is correct?
Which of the following statement is correct?
ESSGrade-9
ESS
In __________ model the Sun, other stars, and the Moon orbit around the Earth.
In __________ model the Sun, other stars, and the Moon orbit around the Earth.
ESSGrade-9
ESS
In the geocentric model, _________ motion would occur.
In the geocentric model, _________ motion would occur.
ESSGrade-9
