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Q2. Calculate the pH of the solution formed after 50.0 cm^3 of 0.0108 mol/dm^3 aqueous sodium hydroxide are added to beaker B. Give your answer to 2 decimal places

A2. First thing to work out is the moles of NaOH added, since moles = concentration x volume, = 0.0108 mol/dm^3 x 50ml, but need volume to be in units of Litres to match with the units of dm^3 so the fo...

Answered by Tutor51285 D. • Chemistry tutor

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Q1. Two beakers, A and B, each contain 100.0 cm^3 of 0.0125 mol/dm^3 nitric acid. Calculate the pH of the solution formed after 50.0 cm^3 of distilled water are added to beaker A. Give your answer to 2 decimal places.

A1. First it is important to know that nitric acid (HNO3) is a strong acid and so [HNO3] = [H+] Beaker A contains 100cm^3 = 100ml Final volume is 150ml (50cm^3 of distilled water is added to beaker...

Answered by Tutor51285 D. • Chemistry tutor

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What is the difference between permutations and combinations?

The main difference is that order of objects matters for permutations. Both involve choosing k objects from a group of size n. Permutations are used to ...

Answered by Oliver P. • Maths tutor

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How do I analyse a text to highlight and discuss issues of language and gender?

Students may discuss how men and women use language 'differently', by analysing a text in a number of ways. Students may examine differences in the following areas of language: lexis and semantics (the vo...

Answered by Hannah D. • English Language tutor

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