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Ket [755]
3 years ago
10

Any substance with constant composition

Biology
2 answers:
Dominik [7]3 years ago
6 0

Answer:

Pure substance

Explanation:

givi [52]3 years ago
4 0



Answer: carbon dioxide


Explanation:

A chemical substance is a form of matter having constant chemical composition and characteristic properties.[1][2] Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds.[3] Chemical substances can be simple substances[4], chemical compounds, or alloys. Chemical elements may or may not be included in the definition, depending on expert viewpoint.[4]

Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar (sucrose). However, in practice, no substance is entirely pure, and chemical purity is specified according to the intended use of the chemical.
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Suppose a human blood cell containing a 0.9 percent solute concentration were put into a container of 0 percent solute solution
Vladimir [108]

Answer and explanation:

If a human blood cell with a 0.9% solute concentration were to be put into a container of 0% solute solution, the cell would get BIGGER.

<u>The cell contains a </u><u>more concentrated solution</u><u> than the solution in the container</u>. The difference in concentration would produce an <em>osmotic gradient</em> that would cause water from the container to get inside the cell to even the concentrations - this is going to make the cell much bigger because the entering water would bloat the cell.

In this example, the solution in the container is hypotonic in relation to the cell, while the solution inside the cell is hypertonic in relation to the solution in the container. This is why the water will be moving from outside of the cell to the inside of the cell.

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3 years ago
What can be predicted by regular patterns of the moon<br><br><br> PLS HELP ME
koban [17]

Answer:

its an illuminated

Explanation:

An easy way to remember and understand those "between" lunar phase names is by breaking out and defining 4 words: crescent, gibbous, waxing, and waning. The word crescent refers to the phases where the moon is less than half illuminated. The word gibbous refers to phases where the moon is more than half illuminated.

3 0
3 years ago
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Select the number of valence electrons for carbon.
zvonat [6]
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4 years ago
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Two grizzly bears are fighting over a fish to feed themselves. what kind of interaction is this scenario, which works as a limit
faust18 [17]

Answer: The correct answer is- Intraspecific competition.

Intraspecific competition can be described as an interaction in a population where members belonging to the same species compete for a limited resource ( such as food, water).

As per the information given in the question, both organisms ( grizzly bears) belong to the same species and competing for fish, which is food for them.

Thus, it is an example of Intraspecific competition.

 


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3 years ago
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PLEASE HELP DUE IN 10 MIN
AleksAgata [21]

Answer:

1. Kinematic energy = 80

2. GPE = 392.4

Explanation:

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