A 4.500 g sample of a pure Group 2 metal carbonate, MCO3\text{MCO}_3MCO3, is heated strongly until it completely decomposes to form 2.522 g of the solid metal oxide, MO\text{MO}MO.
What is metal M\text{M}M?
A
magnesium
B
calcium
C
strontium
D
barium
Markscheme
Group 2 Questions
14 exam-style questions on OCR A A Level Chemistry Group 2. Each one has a worked solution and a mark scheme showing where the marks go.