A pure chemical substance
Explanation:
A pure substance is any substance made up of only one kind of matter and has definite properties.
Matter is anything that has weight and occupies space
On a broad basis, matter can be categorized as pure or distinct substances and impure substances or mixtures.
Pure substances have the following properties;
- All parts of a pure substance remains the same throughout i.e homogeneous.
- Their composition is definite
- They cannot easily be broken or separated down into simpler substances by physical means.
They have a unique set of chemical properties.
Pure substances are elements and compounds.
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Heterogeneous mixtures brainly.com/question/1446244
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Carbon monoxide poisoning occurs when a dangerous amount of carbon monoxide binds to hemoglobin and reduces the body's ability to use oxygen effectively in respiration
Explanation
Hemoglobin a protein in red blood cells binds oxygen in the lung and distribute it throughout the body.However Carbon monoxide is a very aggressive molecule., it has a greater affinity for hemoglobin than oxygen, thus it displaces oxygen and quickly binds therefore very little oxygen is transported through the body cells
The percent of SO₂ in H₂SO₄ : 65.3%
<h3>Further explanation
</h3>
Proust states the Comparative Law that compounds are formed from elements with the same Mass Comparison so that compounds have a fixed composition of elements
%Mass A in AxBy =
For SO₂ in H₂SO₄ :
MW SO₂ = 32 + 2.16=64 g/mol
MW H₂SO₄ =2.1+32+4.16=98 g/mol
The percent of SO₂ :
Answer:
The pH of the solution lies from 11 to 12.Hence, option e is correct.
Explanation:
The value of for caffine =
Initial
0 0.01 M 0
AT equilibrium:
x (0.01 -x)M x
Solving for x:
x = 0.0096 M
The pOH of the solution is given by :
pOH = 2.02
pH= 14 - pOH = 14 - 2.02 = 11.98
The pH of the solution lies from 11 to 12.