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Sauron [17]
4 years ago
7

Steel is an example of a pure substance because it is made up of two different metals melted together. (4 points) True False

Chemistry
1 answer:
Lunna [17]4 years ago
3 0

Answer:

false

Explanation:

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According to the oxygen-hemoglobin dissociation curve, PO2 in the lungs of 100 mm Hg results in Hb being 98% saturated. At high
Ad libitum [116K]

Answer:

Hb would be 78.4% saturated.

Explanation:

This problem can be solved by using simple unitary method.

At 100 mm Hg pressure of oxygen, Hb is saturated by 98%

So, at 1 mm Hg pressure of oxygen, Hb is saturated by \frac{98}{100}%

Hence, at 80 mm Hg pressure of oxygen, Hb is saturated by \frac{98\times 80}{100}% or 78.4%

Therefore, at 80 mm Hg pressure of oxygen in the lungs, Hb would be 78.4% saturated.

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3 years ago
An ionic bond is best described as
LekaFEV [45]
The answer would be B the transfer of electrons from one atom to another
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Answer:

Mechanical energy is converted to chemical energy during photosynthesis. Oxygen is made from the breakdown of carbon dioxide during photosynthesis

Explanation:

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3 years ago
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Which of the following measurements are listed in the proper mathematical relationship?(Select all that apply)
Igoryamba

The measurements which are listed in the proper mathematical relationship include:

  • PV=k
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  • PV/T = k

<h3>What is a Constant?</h3>

This is used in mathematical expressions and has a constant value which doesn't change in expression.

Options A,B and C have the appropriate constants as pressure is usually multiplied by volume.

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8 0
2 years ago
Explain how the understanding of atomic emission spectrum led to development of the atomic theory? ( 4 points)
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