Chemistry
Grade-9
Easy
Question
______ is the sum of atomic masses of the elements present in a molecule.
- Molecular mass
- Average atomic mass
- Molar mass
- Gram molar mass
Hint:
Molecular mass is a number equal to the sum of the atomic masses of the atoms in a molecule.
The correct answer is: Molecular mass
Molecular mass is a number equal to the sum of the atomic masses of the atoms in a molecule. The molecular mass gives the mass of a molecule relative to that of the 12C atom, which is taken to have a mass of 12. Molecular mass is a dimensionless quantity, but it is given the unit Dalton or atomic mass unit.
Also, molecular mass is the sum of atomic masses of the elements present in a molecule.
Related Questions to study
Chemistry
What is the average atomic mass of the sample having 70% carbon-12 and 30% carbon-14?
What is the average atomic mass of the sample having 70% carbon-12 and 30% carbon-14?
ChemistryGrade-9
Chemistry
Calculate the average atomic mass of nitrogen isotope (14N and 15N) present in the atmosphere?
Calculate the average atomic mass of nitrogen isotope (14N and 15N) present in the atmosphere?
ChemistryGrade-9
Chemistry
What is the mass of hydrogen in terms of amu?
What is the mass of hydrogen in terms of amu?
ChemistryGrade-9
Chemistry
Molecular mass is the mass of one molecule of a substance expressed in _________.
Molecular mass is the mass of one molecule of a substance expressed in _________.
ChemistryGrade-9
Chemistry
Gram molecular mass is _________ as the molar mass.
Gram molecular mass is _________ as the molar mass.
ChemistryGrade-9
Chemistry
__________method is used for calculating mass to charge for one or more molecules.
__________method is used for calculating mass to charge for one or more molecules.
ChemistryGrade-9
Chemistry
In which of the following pairs do 1 g of each have an equal number of molecules?
In which of the following pairs do 1 g of each have an equal number of molecules?
ChemistryGrade-9
Chemistry
Mass of H2O in 1000 kg CuSO4 .5H2O is:
Mass of H2O in 1000 kg CuSO4 .5H2O is:
ChemistryGrade-9
Chemistry
Atomic weight is the weight of an atom relative to _______ of weight of 1 atom of C- 12
Atomic weight is the weight of an atom relative to _______ of weight of 1 atom of C- 12
ChemistryGrade-9
Chemistry
Find the total number of iron atoms present in 224 amu iron.
Find the total number of iron atoms present in 224 amu iron.
ChemistryGrade-9
Chemistry
Calculate the total ions & charge present in 4.2 gm of N–3.
Calculate the total ions & charge present in 4.2 gm of N–3.
ChemistryGrade-9
Chemistry
Calculate the following for 49 gm of H2SO4.
Calculate the following for 49 gm of H2SO4.
ChemistryGrade-9
Chemistry
Find the weight of water present in 1.61 g of Na2SO4 .10H2O?
Find the weight of water present in 1.61 g of Na2SO4 .10H2O?
ChemistryGrade-9
Chemistry
Calculate the volume in liters of 20 g hydrogen gas at STP.
Calculate the volume in liters of 20 g hydrogen gas at STP.
ChemistryGrade-9
Chemistry
1 atomic mass unit is equal to
1 atomic mass unit is equal to
ChemistryGrade-9
