Aluminium and iron oxide (fe2o3) react together to produce aluminium oxide (al2o3) .
2al+fe2o3—> al2o3+2fe

(a)calculate mass of iron that is produced by reacting 20g of iron oxide with an excess of aluminium.

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This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

Adilute aqueous potassium nitrate solution is

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion