1.(a)When solid calcium nitrate is heated, brown fumes of nitrogen dioxide, NO 2 , are seen and the solid remaining after decomposition is calcium oxide. (i)Write a balanced…

Oxford Cambridge and RSA Examinations GCE Chemistry A Advanced GCE F325 Equilibria, Energetics and Elements Mark Scheme for June 2010 OCR (Oxford Cambridge and RSA) is a…

Calculations – Past papers questions TAREK S. ELHAGE IGCSE - CHEMISTRY Calculations Explanation & past papers questions www.chem-exptc.com 2010 T.S.ELHAGE www.chem-exptc.com…

1. The kinetics of the hydrolysis of the halogenoalkane RCH2Cl with aqueous sodium hydroxide (where R is an alkyl group) was studied at 50 ºC. The following results were…

1. The kinetics of the hydrolysis of the halogenoalkane RCH2Cl with aqueous sodium hydroxide (where R is an alkyl group) was studied at 50 ºC. The following results were…

1. Cars are fitted with catalytic converters in order to reduce the pollution caused by the combustion of petrol. Potential pollutant gases include carbon monoxide, nitrogen…

1. UnitObjectives Electrochemistr ochemistry 3 Electrochemistr yAfter studying this Unit, you will beable to• describe an electrochemical celland differentiate between…

1.  In chemistry, a solution isa homogeneous mixture composed of onlyone phase. In such a mixture, a solute is asubstance dissolved in another substance,known as a solvent.…

Centre Number Candidate Number Write your name here Surname Other names Total Marks Paper Reference Turn over P45075A ©2015 Pearson Education Ltd. 6/6/7/6/3/1/ *P45075A0128*…

HL Chemistry Topic 4 Questions 1. What is the formula for the compound formed by calcium and nitrogen? A. CaN B. Ca2N C. Ca2N3 D. Ca3N2 (Total 1 mark) 2. Element X is in…