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Rufina [12.5K]
4 years ago
12

What is meant by pure substances?​

Biology
2 answers:
cricket20 [7]4 years ago
8 0
Substances that can’t be broken down
DaniilM [7]4 years ago
5 0

To be clean, and not durty?

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The temperature of a city is 32°F, or 0°C. What form will the precipitation most likely take when it reaches the ground
Ipatiy [6.2K]
Either freezing rain or snow. 
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3 years ago
Which of the following statements about air pollution is not true?
Leokris [45]
Im pretty sure the answer is c.

let me know if its correct
7 0
3 years ago
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Suppose bad weather and pollution dramatically reduce the supply of crawfish in louisiana next year. this would most likely lead
iragen [17]

Suppose bad weather and pollution dramatically reduce the supply of crawfish in Louisiana next year. This would most likely lead to an increase in the marginal utility of crawfish consumption.

Marginal utility of a commodity or service is the change in total utility resulting from consuming an extra unit of that commodity or service.

The marginal utility of a good or service tells about the happiness experienced or the contentment obtained by the consumers as a consequence of the increment or decrement in consumption by one unit.

There exist three kinds of marginal utility. They include positive, negative as well as zero marginal utility.

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3 0
2 years ago
Which of these species is not an acidic oxide?
lesantik [10]

d. CO (carbon monoxide) is not an acidic oxide.

Acidic oxides are those oxides which either act as acceptors of the hydroxide ions (OH-) and function as a Lewis acid or they produce an acidic solution when added to water. Examples of acidic oxides are P4O10 (Phosphorus pentoxide), P4O6 (Tetraphosphorus hexaoxide), SO3 (Sulfur trioxide), SiO2 (Silicon dioxide) etc.

Neutral oxides do not show either of the basic or acidic properties. Due to this fact, they do not form salts when they react with acids or bases. Examples of neutral oxides include CO (carbon monoxide), NO (Nitric oxide), N2O (Nitrous oxide) etc.

Hence, option d is correct.

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4 0
2 years ago
Afterload is described as: a) the length or degree of stretch of the sarcomeres in the ventricular cells before they contract. b
cricket20 [7]

Answer: Option D

After load is the force the ventricles must overcome to eject blood into their respective arteries.

Explanation:

Afterload is the pressure or force the heart must overcome to release blood to the arteries during systole. It is proportional to the average arterial pressure. After load is also proportional to the mean systolic blood pressure measured in millimeters of mercury. It I'd a determinat of cardiac output and cardiac output is the product of stroke volume and heart rate.

5 0
4 years ago
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