Ex- ZnS + Heat - ZnO + SO2
The process in which the carbonate ore is heated in the absence of air is called calcination.
Ex - ZnCO3+ Heat - ZnO + CO2
May this help you
and in absence of oxygen is called calcination
Define roasting and calcination process and give one example for each.
When a sulphide ore is heated to a high temperature in presence of air, the process is termed as roasting. This method is one of the things done while processing an ore. Before roasting, generally the ore is purified. Some ores in the processing of which roasting is done are: Copper Sulphide() and Zinc Sulphide()
Calcination is the process in which a substance is heated to a high temperature when air is absent. This process is done to ores as well. This process is done to remove volatile impurities from ores. Some ores on which calcination is done: Calcium Carbonate() and Zinc Carbonate()Thanking You!
2ZnS + 2O2 heat> 2ZnO + 2SO2
Calcination : Carbonate ore when heated strongly in the absence of air is converted into metal oxide.
ZnCO3 heat> ZnO + CO2
refer newton's law of cooling effect on google ✌
moles of ethanol = 0.04 mol
moles of water = 1 - 0.04 = 0.96 mol
mass of water = 0.96 * 18 = 17.3g
mass of ethanol = 0.04 * 46 = 1.84g
mass of solution = 17.3 + 1.84 = 19.1g
let density of solution be 1g/ml
volume of solution = mass/density = 19.1/1 = 19.1ml = 0.0191l
molarity = 0.04/0.0191 = 2.1m