Paper 1 May/June 2008 CHEMISTRY (9701/01) IGCSE
CIE
AS & A Level
Chemistry (9701)
شهریور
2008
شامل مباحث:
تعداد سوالات: 30
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه

پیش نمایش صفحه اول فایل
The diagram shows the relative abundance of different isotopes of lead in a sample of lead ore. The abundance of 208 is half that of 206. The abundances of 208 and 209 are equal.
What is the relative atomic mass of the lead in the sample?