Paper 1 October/November 2006 CHEMISTRY (9701/01) IGCSE
CIE
AS & A Level
Chemistry (9701)
بهمن
2006
شامل مباحث:
تعداد سوالات: 30
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
45 دقیقه

پیش نمایش صفحه اول فایل
X is an impure sample of a Group 2 metal carbonate, MCO$_3$. X contains 57% by mass of MCO$_3$. The impurities in X do not react with hydrochloric acid.
7.4 g of X is reacted with an excess of dilute hydrochloric acid.
0.050 mol of the Group 2 metal chloride is produced.
What is the identity of the Group 2 metal?