Answer:
Zinc reacts with dilute sulphuric acid to produce hydrogen gas (H2) and zinc sulphate. This is an example of displacement reaction of a non-metal by a metal. ... ZnSO4 is different in chemical composition and chemical properties than Zn and H2SO4 so it is a chemical change.
combustion reaction are always exothermic in nature...so heat liberated is one of way to identify it
Answer:
Dissolving a salt of a weak acid or base in water is an example of a hydrolysis reaction. Strong acids may also be hydrolyzed. For example, dissolving sulfuric acid in water yields hydronium and bisulfate.
Explanation:
They are hard solid with a crystal lattice structure... with high melting points
0.986 moles of CaO are formed when 98.60 g of decomposes.
<h3>What are moles?</h3>
A mole is defined as 6.02214076 × of some chemical unit, be it atoms, molecules, ions, or others.
Number of moles of CaCO3 =
Number of moles of CaCO3 =
= 0.986 moles
Reaction:
→
Since the reaction is 1:1:1.
So 0.986 moles of CaO are formed.
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