Answer:
2 a
element pure form cannot broken down
3 b
Chemical change chemical R×N
(R×N = reaction)
4c homogeneous solution
Yield = Yield (reaction yield): A measure of a chemical reaction's efficiency, as a ratio of moles of product to moles of reactant. Usually expressed as a percentage. % Yield = Moles of product.
Explanation:
65.0cp
20%
w=(solute)/(solution)
w = 50g/250g = 0.2
2 chloro 2 methyl propane reacts with potassium hydroxide in aqueous solution to give 2 methyl 2 propane.
4 is true
