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zhuklara [117]
3 years ago
10

A student took notes in class. - Uses high frequency sound waves - Creates images from echoes - Has many applications - Medical

- Pregnancy - Kidney stones - Cancer - Injury identification - Other - Cleaning - Identification of objects - Breakdown of bacteria - Production Which would be the best title for these notes?
Chemistry
2 answers:
zmey [24]3 years ago
7 0
The best title for this note will be FEATURES AND APPLICATION OF ULTRASOUND.
All the points listed above are characteristics and uses of ultrasound. Ultrasound is defined as the sound wave which has frequency that is higher than the upper audible limit of human hearing. It is used in many fields including medical field. In the medical field, ultrasound is used as a diagnostics tool to treat many disease conditions.
Grace [21]3 years ago
6 0

Answer:

the answer is B.

Explanation:

i got it right.

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Answer:

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When food spoils, it is a chemical reaction. For example, rancid butter is produced when the fat molecules in the butter undergo
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Answer: Decreases the rate of reaction

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  • Transport food in a refrigerated truck.
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  • Store food in a refrigerator after opening.

Does not decrease the rate of reaction

  • Store food in the open air.
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Explanation: Dehydration of food excludes water from food which is one of the factor needed by microorganisms for growth, <em>so it decreaese the rate of reaction.</em>

Transporting food in refrigerated trucks lowers the temperature of food and not many microorganisms are active at very low temperatures, so it <em>decreases the rate of reaction.</em>

Storing food in airtight containers excludes air which is one of the factors required for microbial activity, so <em>it decreases reaction rate.</em>

Storing food in refrigerators after opening also <em>lowers the temperature of food and hence the the rate of microbial activit</em>y.

Storing food in the open air <em>does not decrease microbial activity</em> instead it provides microorganisms with the favorable conditions for their activity such as air and water from water vapor in the air.

Placing food on a warm surface <em>does not decrease rate of reaction</em> because microorganisms are very active in warm and humid environments.

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3 years ago
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