Answer:
6 elements which are carbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus
Explanation:
Living organisms are made up of various unit of giant organic molecules that have been produced through life processes.
The bulk of elements that makes up living organisms are carbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus.
Carbon is almost present everywhere in living organisms. It's unique ability to form a key component lies on its bond formation capabilities. Carbon is found in nearly all organic molecules like carbohydrates, proteins, fats and oils, e.t.c
Hydrogen like carbon is key to life. It is light and making it form different bond types with carbon. It is one of the atoms that makes up water.
Nitrogen is usually found in proteins. They are unique elements that life cannot do without.
Oxygen is useful in respiration processes and it is the bedrock through which energy is released from glucose.
Sulfur is key to life.
Phosphorus in Adenosine Diphosphate is a good store of energy.
Answer:
Mass = 35.02 g
Explanation:
Given data:
Number of moles = 1.75 mol
Mass of HF = ?
Solution:
Formula:
Mass = number of moles × molar mass
Molar mass of HF = 20.01 g/mol
by putting values,
Mass = 1.75 mol × 20.01 g/mol
Mass = 35.02 g
Answer:
b. decreases
C. neither a physical change nor a chemical change
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