Advertisements
Advertisements
Question
What is the significance of the formula H2O ?
Solution
The significance of the formula H2O is:
It represents one molecule of water.
It provides important information on the constituents of water i.e. hydrogen and oxygen, through the chemical formula.
It also provides information on the number of atoms of each element present in one molecule of water.
It refers to the presence of one mole of molecules of water; it refers to 6.022 × 1023 molecules of water.
APPEARS IN
RELATED QUESTIONS
Calculate the molecular mass of CO2.
Calculate the molecular mass of NH3.
Calculate the molecular mass of CH3OH.
Calculate the molecular masses of the following compounds :
Methane, CH4
(Atomic masses : C = 12 u ; H = 1 u)
Calculate the mass of 12.044 × 1025 molecules of oxygen (O2).
How many moles are there in 34.5 g of sodium ? (Atomic mass of Na = 23 u)
Calculate the molecular mass of the following:
(NH₄)₂SO₄
[At mass : C = 12, H = 1, O = 16, Ci = 35.5, N = 14, Cu = 63.5, S = 32, K = 39, Pt = 195, Ca = 40, P = 31, Mg = 24]
Calculate the relative molecular mass of ZnCO3.
Molar mass of CO2 is 42g.
A gas occupied 360 cm3 at 87°C and 380 mm Hg pressure. If the mass of gas is 0.546 g, find its relative molecular mass.