Figure 2 shows the volume of gas produced when a Group 2 metal carbonate is heated. Figure 2

The student collected 5.2 dm3 of gas.
What mass of the Group 2 metal carbonate is heated?
Mass = g
(1)

(f) Calculate the mass of the Group 2 carbonate needed to produce 24 dm3 of gas.
Use your answer from part (e) to help you.

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.