Explanation:
The given data is as follows.
= 30.0 sec,
= 5 min =
= 300 sec
= 12.0 min =
= 720 sec
Formula for adjusted retention time is as follows.

= 300 sec - 30.0 sec
= 270 sec
= 720 sec - 30 sec
= 690 sec
Formula for relative retention (
) is as follows.

= 
= 2.56
Thus, we can conclude that the relative retention is 2.56.
Answer:
Based on the information, the compound is a phospholipid.
Explanation:
Phospholipids are made up of a fatty acid tail which is hydrophobic in nature and a head which comprises of phosphates that is hydrophilic in nature. Hence, phospholipids are amphiphilic compounds so they will be partially soluble in water and will allow water-soluble substances to mix with fats.
Hence, the composition of the substance described in the question confirms that is a phospholipid. As it's structure contains hydrocarbon and phosphorus and might also contain nitrogen.
Tarnish is Ag2S-silver sulfide and the oxidation state of silver is +1
Answer:
V¹N²= V²N²
here V¹= ?
N¹= 6.00
V²= 175ml
M²= 0.2M
So V¹= (V²N²)/N² = (175 x 0.2)/6
V¹ = 5.83 ml
Explanation:
Therefore diluting 5.83 ml of 6.00M NaOH to 175 m l ,we get 0.2M Solution.