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An element 'X' forms an oxide with formula X₂O₃
Write the chemical formula and calculate the molar mass of the following:
A compound was found to contain carbon and hydrogen in the ratio of carbon 12 g and hydrogen 4 g. What is the formula of the compound?
Imagine you are a chemist working in a laboratory that specializes in analysing and identifying chemical compounds. One day, a colleague asks for your help to determine the cations and anions present in several compounds they are working with. Analyse the following compounds and identify the cations and anions present (if any): (a) KBr (b) CaCO₃ (c) O₂ (d) MgSO₄
Write the molecular formulae of all the compounds that can be formed by the combination of the following ions: Cu²⁺, Na⁺, Fe³⁺, Cl⁻, SO₄²⁻, PO₄³⁻
Classify each of the following on the basis of their atomicity. (i) Cl₂ (ii) SO₂ (iii) N₂O₃ (iv) C₃H₈ (v) S₈ (vi) H₂O
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