A solution of potassium hydroxide (KOH) was titrated against a solution of hydrochloric acid. It took 35cm3 of the hydrochloric acid to completely neutralise the potassium hydroxide. Work out how many moles of acid there were in this volume if the concentration of the acid was 2mol/dm³.

The three types is stress that act on earths rocks are compression, tension, and

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o