Explanation:
Given that sodium butylite is reacting with 1-chloro-3-methyl butane. In a reaction 6-methyl nona-3-yne and sodium chloride will be obtained as product.
The chemical reaction:

The reaction is also attached as image for reference.
Answer:
(4) Water, stirring, and filtering
Explanation:
The added water will dissolve the sugar but not the sand. When you filter the mixture, the sand will be trapped in the filter paper and the dissolved sugar will pass through the pores of the paper.
(1) and (2) are wrong. You don't separate a mixture of sugar and sand by adding more sand. Furthermore, neither substance will boil at 100 °C.
(3) is wrong. You can dissolve the sugar in water but, if you boil the water away, the sugar and sand will still be together.
The compound HF is an acid. This is because it dissociates in water to give hydrogen ions (H⁺) as the only positively charged ions.
The others dissociate as follows: NH₃ reacts with water to form an alkaline solution NH₄OH.
LiF dissolves to form an ionic solution
KOH dissociates in water to form an alkaline solution.
Answer:
A- In (NH4)3PO4 there are four ions in total as three ions of NH₄ and is one ion of PO₄
Put a 2 on the HCl.
2HCl+Ba-->BaCl2+H2