Chemistry
Grade-9
Easy
Question
Calculate the volume in liters of 20 g hydrogen gas at STP.
- 22.4L
- 2.24L
- 224L
- 0.224L
Hint:
At STP the volume of 1 mol of hydrogen gas is 22.4L.
The correct answer is: 224L
Mass of hydrogen gas is 2g.
Number of moles of hydrogen in 20g is 10 mole.
At STP the volume of 1 mol of hydrogen gas is 22.4L. Therefore, volume of 10 mole is 224L. Hence, the volume in liters of 20 g hydrogen gas at STP 224L.
Related Questions to study
Chemistry
1 atomic mass unit is equal to
1 atomic mass unit is equal to
ChemistryGrade-9
Chemistry
If water samples are taken from sea, rivers or lakes, they will be found to contain hydrogen and oxygen in the approximate ratio of 1:8. This indicates the law of
If water samples are taken from sea, rivers or lakes, they will be found to contain hydrogen and oxygen in the approximate ratio of 1:8. This indicates the law of
ChemistryGrade-9
Chemistry
The volume occupied by one mole of softballs would be about the size of the Earth.
The volume occupied by one mole of softballs would be about the size of the Earth.
ChemistryGrade-9
Chemistry
If the mass of water is 18 gm, then what is the volume in terms of mililiters?
If the mass of water is 18 gm, then what is the volume in terms of mililiters?
ChemistryGrade-9
Chemistry
The number of moles in a pure substance is represented as
The number of moles in a pure substance is represented as
ChemistryGrade-9
Chemistry
How much part of mass of carbon C-12 atom is in one unit of atomic mass?
How much part of mass of carbon C-12 atom is in one unit of atomic mass?
ChemistryGrade-9
Chemistry
Under the same conditions of temperature and pressure, equal volumes of all gases contain the same number of molecules- this statement was given by which law?
Under the same conditions of temperature and pressure, equal volumes of all gases contain the same number of molecules- this statement was given by which law?
ChemistryGrade-9
Chemistry
When two or more elements combine and exist independently, they are called a___________.
When two or more elements combine and exist independently, they are called a___________.
ChemistryGrade-9
Chemistry
There are as many atoms in 'X' g of Sulfur as there are in 3 g of carbon. What exactly is 'X'?
There are as many atoms in 'X' g of Sulfur as there are in 3 g of carbon. What exactly is 'X'?
ChemistryGrade-9
Chemistry
Atomic mass of carbon and helium is 12 and 4, respectively. Which of the following statements are correct with respect to the 1 mole of the element given?
Atomic mass of carbon and helium is 12 and 4, respectively. Which of the following statements are correct with respect to the 1 mole of the element given?
ChemistryGrade-9
Chemistry
Number of particles that are present in 1 mole of atom
Number of particles that are present in 1 mole of atom
ChemistryGrade-9
Chemistry
One mole of carbon dioxide contains
One mole of carbon dioxide contains
ChemistryGrade-9
Chemistry
Protons, neutrons, and electrons are all known to exist in atoms. What will be the atomic mass if the mass of the neutron is half that of the proton, and the mass of the proton is assumed to be twice that of the neutron?
Protons, neutrons, and electrons are all known to exist in atoms. What will be the atomic mass if the mass of the neutron is half that of the proton, and the mass of the proton is assumed to be twice that of the neutron?
ChemistryGrade-9
Chemistry
How many moles of magnesium phosphate will 0.25 moles of oxygen contain?
How many moles of magnesium phosphate will 0.25 moles of oxygen contain?
ChemistryGrade-9
Chemistry
Which of the following statements are correct?
Which of the following statements are correct?
ChemistryGrade-9
