A balanced equation contains
A) Equal number of moles of reactants and products
B) Equal number of molecules of reactants and products
C) Equal number of atoms of different elements on reactant side and product side
D) All the above
1 Answers
Talk Doctor Online in Bissoy App
“All of us must use jute products instead of synthetic products”.
A) Yes. We must use jute products because they are ecofriendly
2 Answers 1 views
The sum of the masses of reactants and products is equal in any physical or chemical reaction. This is in accordance with ………………
(C) law of conservation of mass Mass neither created nor destroyed therefore in a chemical or physical reaction, the mass is conserved this is known as law of conservation of mass.
2 Answers 1 views
The sum of the masses of reactants and products is equal in any physical or chemical reaction. This is in accordance with ………………
2 Answers
1 views
Number of moles of Oxygen needed to produce 4 moles of water on reacting with 4 moles of Hydrogen gas is …………….
Correct option is B) 2 moles
2 Answers 1 views
Which is not true in a balanced equation ? A) Number of atoms of different elements on both sides are equal.
C) Number of charged ions on both sides are equal.
2 Answers 1 views
In a senior secondary school,80 students play football or hockey.The number that play football is 5 more than twice the number that play hockey.If 15 students play both games and every student in the school plays at least one game,find (i)the number of students that play football (ii)the number of students that play football but not hockey (iii)the number of students that play hockey but not football.
I thought F or H = 80 is giving by n(F u H) = n(F) + n(H) - n(F n H)
2 Answers 8 views
The coefficients x, y, and z in the following balanced equation xZn + + 10H+ → zZn^2+ + + 3H2O are …………..
Correct option is: (A) 4, 1, 4
2 Answers 1 views
1. (a) Is ammonia more dense or less dense than air? (b) What property of ammonia is demonstrated by the Fountain Experiment? (c) Write the balanced equation for the reaction between ammonia and sulphuric acid. 2. Pick the odd member from the list giving reasons: (a) Ammonia, sulphur dioxide, hydrogen chloride, carbon dioxide. (b) Copper oxide, aluminium oxide, sodium oxide, magnesium oxide. 3. Give reasons for the following : (a) Liquid ammonia is used as a refrigerant in ice plants. (b) Aqueous solution of ammonia is used for removing grease stains from woollen clothes. (c) Aqueous solution of ammonia gives a pungent smell. (d) Aqueous solution of ammonia conducts electricity.
(1) (a) ammonia is less dense than air (b) solubility in water (c) 2NH3 + H2SO4 → (NH4)2SO4 (2) (a) Ammonia → because - NH3 is basic while, SO2,HCl and CO2 are acidic oxides. (b) CuO,...
2 Answers 1 views
1g of a mixture of equal number of moles of `Li_(2)CO_(3) "and" M_(2)CO_(3).` Required 44.44 ml of 0.5 M HCl for completion of the reactions, `Li_(2)C
Correct Answer - 23
2 Answers 1 views