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serious [3.7K]
3 years ago
7

In order to provide nutritional information about food, scientists must evaluate how many calories a given food has per serving

Given what you know about chemical and thermal energy, which is the best procedure for a scientist to use to determine how many calories are in a certain food?
A Burn the food and determine the change in temperature from the beginning to the end.

B Dissolve the food in water and determine how it changes the boiling point of the water.

C Burn the food and determine how much it raises the temperature of a known amount of water.

D. Dissolve the food in water and determine if it changes the standing temperature of the water.​
Biology
2 answers:
Mashutka [201]3 years ago
5 0

Answer:

                 

Explanation:

I am the thing that goes bump in the night. The shadow-like figure all are too afraid to identify in their room. The silent stalker of your waking nightmares and lucid dreams. Do not worry, I can- but will not- hurt you. Your family, however, doesn't have such luck. Do not warn them that I will be following their every move, or it will lead to a grizzly fate for you and your bloodline. I hope that my message has given you closure for the events to come.

In the meantime, you can pray for your family. Maybe I'll have mercy.

Snowcat [4.5K]3 years ago
4 0

Answer:

Burn the food and determine how much it raises the temperature of a known amount of wate

Explanation:

Got it right on Edgeniuty :)

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Gas makes things buoyant, why ? And what are ways that this could be useful?
ryzh [129]

Answer:

Gas makes things buoyant by making the volume of an object lighter than the surrounding fluid it is trying to displace.

Gas Buoyancy is useful in the following ways;

• Airships

• Steel ships and

• All floating and flying vessels

Explanation:

Buoyancy is the tendency of an object to float in a fluid such as air or water. It is a phenomenon that was theorized by the mathematician, Archimedes known as the Archimedes Principle.

It states that the upward buoyant force that is exerted on a body immersed in a fluid is equal to the weight of the fluid that the body displaces.

The principle explains the reason why objects float and fly.

So, when an object is immersed in a fluid, it can float due to the upward force exerted by the fluid on the object. But for this to happen, the object has to weigh less than the fluid it is displacing.

This is where the use of a gas comes into play.

Because the object may be heavier than the surrounding fluid it is trying to displace, it is filled with a large amount of gas (usually hydrogen and/or helium) which is lighter. This makes the volume of the gas and the object put together lighter than that of the surrounding air.

This is what causes objects to float or fly

7 0
3 years ago
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lapo4ka [179]
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In a forest ecosystem foxes feed mostly on a variety of birds and rodents (small furry
g100num [7]

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3 0
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What evolutionary development allowed plants to grow tall? see concept 29.3 (page 626)?
aivan3 [116]
If your choices are the following:
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2 years ago
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