Igcse Model Questions Vol1 2017 Chemistry Question 1

Practice practical question 1 from the 2017 Igcse Model Questions Vol1 Chemistry examination. This question covers Atomic structure .

Igcse Model Questions Vol1 2017 Chemistry Practical
Topic: Atomic structure
Question 1 IGCSE_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • practical

You are given the following isotopic data for chlorine: | Isotope | Relative atomic mass (u) | Natural abundance (%) | |---------|--------------------------|-----------------------| | ^35Cl | 34.969 | 75.78 | | ^37Cl | 36.966 | 24.22 | Using this information, answer the questions below.

Question Parts

( a )
Calculate the relative atomic mass of chlorine to two decimal places.
( b )
Using the relative atomic mass obtained in part (a), calculate the number of moles present in a 0.250 g sample of chlorine gas (Cl₂). Give your answer in scientific notation to three significant figures.
( c )
State two possible sources of error that could affect the calculated relative atomic mass of chlorine in part (a).

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About This Question

This is Igcse Model Questions Vol1 2017 Chemistry Question 1. It is one of the practical questions from the 2017 Igcse Model Questions Vol1 Chemistry examination.

The question covers Atomic structure .

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