Give the chemical formulae for the following compounds and compute the ratio by mass of the combining elements in each one of them. (You may use appendix-III).

Question

CASE_STUDIESLaw of Constant Proportions in ChemistryChemical Formula of CompoundsNCERT Exemplar5 sub-questions

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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:

CASE_STUDIES

Chemical Formula of Compounds

Molecular Mass of Compounds

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?

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⁻

According to the law of constant proportions, which of the following statements is true for a compound like carbon dioxide (CO₂)?

Classify each of the following on the basis of their atomicity. (i) Cl₂ (ii) SO₂ (iii) N₂O₃ (iv) C₃H₈ (v) S₈ (vi) H₂O