Answer:
2-propanol
Explanation:
From the given information
2 drops of an unknown sample were said to be placed in a test tube followed by the addition of 2 ml of ethanol then gentle mixing. They then initiate a further addition of 2 drops of potassium permanganate reagent (KMNO₄) to the test tube and mixed the contents of the test tube thoroughly. After adding 2 drops of potassium permanganate reagent, the reagent oxidizes the secondary alcohols(2-propanol) to ketone(i.e acetone) and no further reaction will take place since there are no reactive C-H bonds left. The diagram attached below shows how the reaction proceeds.
When to positive atoms connect
Answer: 2.796 grams
Explanation:
According to stoichiometry:
1 mole of 
reacts with 1 mole of 
0.012 moles of will react with=
of
Thus is the limiting reagent as it limits the formation of product. is the excess reagent as (0.018-0.012)=0.006 moles are left unused.
1 mole of produces 1 mole of 
0.012 moles of will produce= of
Mass of 
Thus 2.796 grams of are produced.
Answer:
8.62 g of Hydrogen
Solution:
Molar mass of CH₄O (Methanol) is 32 g.mol⁻¹.
It means,
32 g of CH₄O contains = 4 g of Hydrogen
Then,
69 g of CH₄O will contain = X g of Hydrogen
Solving for X,
X = (69 g × 4 g) ÷ 32 g
X = 8.62 g of Hydrogen
