In a sample of ethyl ethanoate (CH3COOC2H5 ) the two oxygen atoms have the same number of electrons but different number of neutrons

Number of electrons (Z = 5) = 5 Number of protons (Z = 5) = 5 Number of neutrons (A = Z) = 11 – 5 = 6 Since the atomic number is...

(c) ozone and oxygen

(a) 15 X 31.......

Ratio of number of moles 1 /1 ∶ 8/ 16  Number of moles = Mass / Atomic mass Number of moles of hydrogen = 1/ 1 = 1  Number of moles of oxygen...

1 mole of oxygen atoms = 6.023×1023 atoms  ∴Number of moles of oxygen atoms =   2.58 ×1024 / 6.022×1023                             ...

One gram of gold sample will contain 90/100 =0.9g of gold    Number of moles of gold = Mass of gold/ Atomicmass of gold                 ...

(i) Third period Group-1 ,2,13,14, 15, 16, 17, 18 respectively. (ii) Nature of compound: Electrovalent/ionic (iii) Metals-A and B; Non-metals-E, F, G (iv) G/H (v) CG3 (vi) H (vii) A (viii) D

(D) Helium or nitrogen To prevent rancidification of foods containing fats and oils, the packed food is surrounded by unreactive gas (like helium, nitrogen, etc.). The inert atmosphere thus created prevents...

CH3COOH + Na2CO3 → 2CH3COONa + H2O + CO2 Sodium carbonate                                 Water       Carbondioxide CH3COOH + NaHCO3→...

(c) : According to Raoult’s law equimolal solutions of all the substances in the same solvent will show equal elevation in boiling points as well as equal depression in freezing...