C: 1.40 g
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Drinking water may contain dissolved calcium hydrogencarbonate, Ca(HCO₃)₂. How many electrons are present in a hydrog…
Sodium hydroxide neutralises acid. H⁺ + OH⁻ → H₂O In a 11000 dm³ sample of an aqueous solution, the concentration of …
Which volume of hydrogen, measured under room conditions, is produced when 0.160 g of methanol reacts with an excess …
Organic compound X gives a precipitate when warmed with aqueous silver nitrate. This precipitate dissolves when conce…
Propanal reacts with hydrogen cyanide to form 2-hydroxybutanenitrile. A suitable catalyst for this reaction is sodium…
Carbon and silicon are elements in Group 14.