The presence of salt that is sodium chloride cannot be tested at once. Two different tests are performed to show the presence of both sodium and chloride.
To test for the chloride ion:
Add few drops of aqueous solution of silver nitrate to aqueous solution of sodium chloride, white precipitate is seen which cannot dissolve in cold water and dilute nitric acid. This precipitate formed is soluble in solution of ammonium hydroxide to give a colorless diamine silver chloride solution.
To test for the sodium ion: Use a flame test.
Dip a wire of platinum in concentrated hydrochloric solution and hold it in the flame of the Bunsen burner until the flame no longer changes its color. Again dip the wire in hydrochloric solution and rub some sodium chloride on the wire and put it again in the burner, an intense yellow to orange color forms that shows the presence of sodium ion.
If the substance passes both the tests in the given way then it is salt (sodium chloride)
Answer:
producers
Explanation:
producers are organisms such as plants that use energy from the sun to produce their own food through photosynthesis
1) Angiosperm derived characteristics
2) Evolution
3) Classification
Answer:
Tiered pricing is a method where sellers segment the pricing of their products or services to suit their various target markets. By optimizing and changing up your offering between each of the segments, you appeal to a wider (and more varied) customer base as you provide for different demand rates and price points.
Answer:
True.
Explanation:
DNA's replication is the process where each daughter cell receives the same copy of the DNA. During the synthesis phase of the cell cycle replication of DNA occurs. While increasing speed of replication the DNA molecule is opened at several locations, and creating multiple replication bubbles.
Replication bubbles opened DNA strands at several locations where DNA are complementary to each other, such as one strand of DNA contains a nucleotides sequence of TCAGTA will have a complementary another strand with the sequence AGTCAT.
