Advertisements
Advertisements
प्रश्न
Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?
Advertisements
उत्तर
Hydrogen : Oxygen = 1 : 8
1g of hydrogen requires 8g of oxygen.
So, the mass of oxygen gas required to completely combine with 3g of hydrogen gas is
Oxygen = (8 × 3)g
= 24g
A mass of 24g of oxygen gas will be required to completely combine with 3g of hydrogen gas.
संबंधित प्रश्न
Which postulate of Dalton’s atomic theory is the result of the law of conservation of mass?
When magnesium is burnt in air, there is an increase in mass after the reaction.
Name the scientist who gave law of conservation of mass.
Name the law of chemical combination which was given by Lavoisier.
State the law of conservation of mass. Give one example to illustrate this law.
Potassium chlorate decomposes, on heating, to form potassium chloride and oxygen. When 24.5 g of potassium chlorate is decomposed completely, then 14.9 g of potassium chloride is formed. Calculate the mass of oxygen formed. Which law of chemical combination have you used in solving this problem ?
Select the correct answer from A, B, C, D & E for the statement given below:
In Landolt’s experiment – the form in which the chemical energy stored up in the reactants __________ is released.
Why does a light paddle wheel placed in the path of cathode rays begin to rotate, when cathode rays fall on it?
The chemical symbol for nitrogen gas is ______.
Name the four laws of chemical combinations.
