21.What is the chemical composition of fat in the human body?
Fat found in the human body is mainly composed of
- Glycerides
- Glycerides + Phospholipids
- Glycolipids
- Phosphoinositides
- Tocopherol
22.What makes a molecule into organic molecule?
In a molecule when a hydrogen atom is less than the ratio of a carbon atom, then such molecules are referred to as an organic molecule.
23.What is the formula you will use to calculate how many milliliters of 5.5 M NaOH are required to prepare 400 mL of 1.5 M NaOH?
To know the amount or volume of NaOH to prepare 400 mL of 1.5 M NaOH, we use formula
M1 X V1=M2XV2
5.5 X V1= 1.5 M x 0.4 L
V1 = 1.5 M X 0.4 L/5.5
V1 = 0.10 L
V1 = 100 mL
So, you need 100 mL of 5.5 NaOH
24. Why graphite rod is used in nuclear reactor?
Graphite rod is used in nuclear reactor to convert fast moving neutrons into thermal neutrons.
25. Mention how many milliliter is equal to 1 liter and how many microliter is equal to liter?
1 milliliter = 0.001 liter
1 microliter = 0.000001 liter
26.What is oxidation and reduction reaction?
Oxidation = When there is a loss of hydrogen or electrons OR gain of oxygen is known as Oxidation reaction.
Reduction = When there is a gain of hydrogen or electron OR loss of oxygen is known as a reduction reaction
Example of oxidation reduction reaction is observed in the human body when an electron is transferred into the cell and oxidation of glucose take place from which we get the energy.
27.What is the concentration, in parts per billion, of a solution that contains 1 microgram of solute per liter?
1 ppb
28.Never found uncombined on Earth, what element occurs abundantly in limestone gypsum and fluorite?
Calcium
29. To the nearest whole number, convert 0.300 atmosphere into millimeters of mercury, or torr:
228 Millimeters Of Mercury, Or Torr
30. 4.0 liters of oxygen are mixed with 8.0 liters of nitrogen. Identify the solute and solvent in this mixture:
Oxygen is the solute
Nitrogen if the solvent
31. The reaction of an acid with an alcohol to form an ester and water is called:
Esterification
32. Carbohydrates are made of what three elements?
Carbon,
Hydrogen
Oxygen
33. What are the two most common end products of alcoholic fermentation?
Ethanol And Carbon Dioxide
34. How many milliliters of water would you add to 100 milliliters of a 0.350 molar solution to make a 0.100 molar solution?
250 Milliliters
35.What is the term for the pH at which an amino acid or protein becomes electrically neutral?
Isoelectric Point
36.Many of the groups of elements in the periodic table have acquired common names.
The elements in Group IA, with the exception of hydrogen, are called Alkali Metals
37.Name the two most abundant elements in the universe?
Hydrogen And Helium
38.Give the symbol for the element that is derived from the Latin word Plumbum?
Pb
39.In order to compare two different gas samples, scientists use what is called the STP. What does STP stand for?
Standard Temperature And Pressure
40.What colorless liquid was originally produced from the distillation of wood and is often
referred to as wood alcohol: Methanol