Iodoform test
Formation of yellow precipitate of iodoform is used as a test for certain aldehydes and ketones that have methyl group bonded to carbonyl group CH 3 CO- or compounds that can form this group on oxidation e.g. This test is performed by heating the substance with aqueous sodium..
Formation of yellow precipitate of iodoform is used as a test for certain aldehydes and ketones that have methyl group bonded to carbonyl group CH 3 CO- or compounds that can form this group on oxidation e.g. This test is performed by heating the substance with aqueous sodium..A soap manufacturing company packs 52 soaps per carton. Find the numbe..
A soap manufacturing company packs 52 soaps per carton. Find the number of soaps that can be packed in 10 cartons, using a direct variation model. => 468 or 624 or 572 or 150..
A company makes pens, batteries, and soaps. A pack of 5 pens and 1 soa..
A company makes pens, batteries, and soaps. A pack of 5 pens and 1 soap costs $52. A pack of 1 battery and 1 soap costs $22. A pack of 1 pen and 1 battery costs $18. Find the cost of a pen, a battery and a soap using Elimination method. => ($15.33, $33.33, $5..
Hanna needed a rope for packing. She bought 2 m of rope from the marke..
Hanna needed a rope for packing. She bought 2 m of rope from the market and found that it was not enough. She bought another piece of 120 cm long. Find the total length of the rope Hanna used. => 320 cm or 122 cm or 3200 cm or 140 cm..
Holly needed a rope for packing. She bought 0.7 m of rope from the ma..
Holly needed a rope for packing. She bought 0.7 m of rope from the market and found that it was not enough. She bought another piece of rope that was 0.6 m long. Find the total length of the rope Holly used and convert it into fractional form. => 13 10000 m or 13 10 m or 13 1000..
Uses of Ethanol
Ethanol is used in the manufacture of: paints and varnishes alcoholic beverages ether, choloform, iodoform and other organic compounds dyes transparent soaps power alcohol, a substitute for petrol it is also used as a fuel in spirit lamps and stoves in scientific appar..
Uses of Oxygen
For respiration - All air breathing animals and plants use oxygen present in air by the process of respiration. This is known as aerobic respiration. During respiration, food is burnt in living cells by using oxygen to release energy for all metabolic activities. Without breathi..
A bottling company uses a filling machine to fill plastic bottles with..
A bottling company uses a filling machine to fill plastic bottles with medicine. The bottles are supposed to contain 250 ml. In fact the contents vary according to a normal distribution with mean μ = 248 ml and standard deviation σ = 3 ml. What is the probability that the mean co..
From propanone (acetone)
The reactions taking place are similar to the above reactions, finally giving rise to iodoform: ..
The reactions taking place are similar to the above reactions, finally giving rise to iodoform: ..Apparatus
The apparatus used for the estimation of carbon and hydrogen consists of a long hard-glass combustion tube packed with copper oxide and coarse copper oxide. Left end of the combustion tube is connected to the oxygen supply, while at the other end, two pre-weighed absorption tub..
The apparatus used for the estimation of carbon and hydrogen consists of a long hard-glass combustion tube packed with copper oxide and coarse copper oxide. Left end of the combustion tube is connected to the oxygen supply, while at the other end, two pre-weighed absorption tub.. Result
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