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Korolek [52]
3 years ago
15

How does the immune system uses feedback mechanisms?

Chemistry
1 answer:
Marianna [84]3 years ago
4 0

Answer:The main job of the innate immune system is to fight harmful substances and germs that enter the body, for instance through the skin or digestive system. The adaptive (specific) immune system makes antibodies and uses them to specifically fight certain germs that the body has previously come into contact with.

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Select the correct location on the image.
Mice21 [21]

Answer:

The third one from the left–the graduated cylinder.

Explanation:

The laboratory apparatus that gives an <em>"accurate" </em>or <em>"precise" </em>measurement of a liquid's volume is the<em> graduated cylinder</em>. All you have to do is to pour the liquid into the cylinder and read its measurement using the calibrated scale.

The graduated cylinder comes in different sizes, which means the scale divisions will depend on its size. When reading the measurement, it is important to take note to read at the <u><em>bottom of the meniscus</em></u> because it gives the most accurate volume.

7 0
3 years ago
Which statement must be true when solution equilibrium occurs?
Ksivusya [100]
(3) The concen<span>tration of the solution remains constant.</span>
8 0
3 years ago
Read 2 more answers
PLEASE Help I will give u brainliest for if u get right.
solong [7]

Answer:

H

Explanation:

Hydrogen is a nonmetal love:)

3 0
3 years ago
Read 2 more answers
If 20 grams of aluminum react with 200 grams of bromide to form aluminum bromide and no aluminum is left after the reaction, but
Varvara68 [4.7K]
The answer is: 197 grams

Why?

All 20 grams of aluminum was used to form aluminum bromide. Only 177 grams of bromide were used to make aluminum bromide, since 23 grams were left over.

20 grams + 177 grams = 197 grams, so the answer is 197 grams.
8 0
4 years ago
Liquid nitrogen, which has a boiling point of −195.79°C, is used as a coolant and as a preservative for biological tissues. Is t
Ray Of Light [21]

Answer:

Explanation:

Entropy is measure of disorder so as we lower the temperature of gas , its entropy decreases .

Hence at - 200°C entropy of nitrogen will be less than that at - 190°C .

At freezing point ,

entropy of fusion  = latent heat / freezing temperature

= .71 kJ / ( 273 - 210 )

= 710 / 63 J mol⁻¹ K⁻¹ .

= 11.27 J mol⁻¹ K⁻¹ .

entropy of fusion = 11.27 J mol⁻¹ K⁻¹ .

8 0
3 years ago
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