Question

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⁻

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

You start with a container that holds exactly 4 grams of nitrogen gas (N₂). According to your lab manual, the reaction to form ammonia requires nitrogen and hydrogen to combine in a mass ratio of 14 : 3. Given this information, calculate the mass of hydrogen gas (H₂) you need to react completely with your 4 grams of nitrogen gas.