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Answer: Given Mass % of iron = 69.9 % Mass % of oxygen = 30.1 % Element Atomic mass Mass % Mass % / atomic mass Fe 55.85 69.9 69.9/55.85 = 1.25 O 16.00 30.1 30.1/16.00 = 1.88 Fe : O = 1.25 : 1.88 Converting...
1 Answers 1 viewsThe oxide of the element is basic as it turns red litmus blue .This means that the element is a metal (M).
1 Answers 2 viewsThe ions having same number of electrons are called isoelectronic ions. The above order is due to increasing order of effective nuclear charge.
1 Answers 2 viewsUsing the relationship of density (ρ) of the substance at temperature (T) We have ρ = Mp/RT or p = ρ RT/ M For the given data if M is the molar mass...
1 Answers 1 views(i) Sodium oxide → Na2O (ii) Aluminium chloride → AlCl3 (iii) Sodium suphide → Na2S (iv) Magnesium hydroxide → Mg(OH)2
1 Answers 1 views(a) Magnesium chloride →MgCl2 (b) Calcium oxide →CaO (c) Copper nitrate →Cu(NO3)2 (d) Aluminium chloride →AlCl3 (e) Calcium carbonate →CaCO3
1 Answers 2 views1 mole of aluminium oxide (Al2O3) = 2 × 27 + 3 × 16 = 102g i.e., 102g of Al2O3 = 6.022 × 1023 molecules of Al2O3 Then, 0.051 g of Al2O3...
1 Answers 1 views(a) Chemical change (b) Acidic and basic solutions can be prepared by dissolving the products of the above process in water CaO+H2O →Ca(OH)2 (basic solution) CO2 + H2O→H2 CO3 (acidic solution)
1 Answers 1 views[Hint : (i) 4 (ii) Because due to presence of vacant d-orbitals in the octet of 'p', it can expand its octet to form PCl5, while N cannot expand its octet.]
1 Answers 1 viewsC displaces B from its oxide, therefore, C is more reactive than B. There is no reaction when C is treated with oxide of A or C does not displace A...
1 Answers 1 views