Question

1) Given the reaction 2 H₂ + O2 = 2H2O. If you start with 3 mols of Oz, How many mols of water will be produced? 2) An elements atomic number is identical to the number of al protons & heutrons c) its mass b) protons + electrons electrons but not protons el electrons & neutrons.

Answer 1

(1) Given, 2 H₂ + = 20 From this equation, 2 moles of Hg reace with I mol of Og to for 2 moles of Hgo (water) In short o- 1 mol of produced = 2 mol of Ho 3 moles of og produced - 2x3 moles of Hyo = 6 moles of Ho Hence, 3 moles of Og will produced 6 moles of water Answer: 6 moles of water we Know that the (2) As atomic number of an element is equal to the number of protons or electrons. For example, sodium (Na). Number of electrons = Number of protons = 11 Atomic number of sodium is 11. Hence, option 6) protons or electrons i8 the right answer Let me have if Korow you any queries regarding this,