A white solid is a nitrate of metal M. Its formula is M(NO3)2\mathrm{M(NO_{3})_{2}}M(NO3)2 and its relative formula mass, MrM_rMr, is 164.1.
| Element | N | O | Mg | K | Ca | Zn |
|---|---|---|---|---|---|---|
| Relative atomic mass, ArA_rAr | 14.0 | 16.0 | 24.3 | 39.1 | 40.1 | 65.4 |
Identify metal M.
102 exam-style questions on OCR GCSE Chemistry 2.1 Purity and separating mixtures, covering 2.1.1 Pure substances and melting point data, 2.1.2 Relative formula mass and empirical formula, 2.1.3 Formulations as useful mixtures, 2.1.4 Techniques for separating mixtures, and 2.1.5 Chromatography and Rf values. Each one has a worked solution and a mark scheme showing where the marks go.