Table of Contents
What is the molecular mass of this gas?
The molecular weight (molar mass) of any gas is the mass of one particle of that gas multiplied by Avogadro’s number (6.02 x 1023). Knowing the molar mass of an element or compound can help us stoichiometrically balance a reaction equation.
What is meant by molecular formula with example?
Molecular Formula Definition: An expression which states the number and type of atoms present in a molecule of a substance. Examples: There are 6 C atoms and 14 H atoms in a hexane molecule, which has a molecular formula of C6H14.
What molecular formula means?
: a chemical formula that gives the total number of atoms of each element in each molecule of a substance — compare structural formula.
How do you find the number of moles of a gas?
Multiply the volume and pressure and divide the product by the temperature and the molar gas constant to calculate moles of the hydrogen gas. In the example, the amount of hydrogen is 202,650 x 0.025 / 293.15 x 8.314472 = 2.078 moles.
How do you find the molecular weight of a gas?
Calculate the number of moles of gas from the given pressure, volume, and temperature.
- Calculate the number of moles of gas from the given pressure, volume, and temperature. n = PV/RT.
- The molecular weight of the gas is grams of gas (1.56 g) divided by moles of gas: 1.56 g ÷ 0.0371245 mol = 42.020768 g/mol.
What is gas has the chemical formula C3H8?
Propane ( / ˈproʊpeɪn /) is a three- carbon alkane with the molecular formula C 3 H 8. It is a gas at standard temperature and pressure, but compressible to a transportable liquid.
What is gas has the chemical formula CH4?
Methane (US: / ˈ m ɛ θ eɪ n / or UK: / ˈ m iː θ eɪ n /) is a chemical compound with the chemical formula CH 4 (one atom of carbon and four atoms of hydrogen). It is a group-14 hydride and the simplest alkane , and is the main constituent of natural gas .
Which is the correct chemical formula for hydrogen gas?
The molecular formula of Hydrogen is H 2. It is a colourless, diatomic gas which is tasteless and odourless compound. Its atomic number is 1. Apart from H1 isotope, hydrogen occurs as Deuterium (stable isotope) and radioactive isotope Tritium (unstable).
What is the chemical structure of gasoline?
Gasoline is 2,2,4-trimethylpentane. It is what’s called a branched alkane. The petroleum industry calls it “isooctane” inappropriately. Shorthand, it is CH3CH(CH3)CH2C(CH3)2CH3.