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wariber [46]
3 years ago
13

When someone’s immune system overreacts to something harmless it’s called:

Chemistry
2 answers:
ruslelena [56]3 years ago
5 0
I feel like it would be c
Mama L [17]3 years ago
3 0
The answer to this question is C. An allergy.
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What is the wavelength of a 2500 kg truck traveling at a rate of 75km/h?
Pepsi [2]

m = mass of the truck traveling = 2500 kg

v = speed of the truck traveling = 75 km/h = 75 (km/h) (1000 m/ 1 km) (1 h /3600 sec) = 20.83 m/s

h = plank's constant = 6.63 x 10⁻³⁴

λ = wavelength of truck = ?

according to de broglie's principle, wavelength of truck is given as

λ = h/(mv)

inserting the values in the above equation

λ = (6.63 x 10⁻³⁴)/((2500) (20.83))

λ = 1.3 x 10⁻³⁸ m

5 0
3 years ago
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How is a mixture such as a plate of pasta different from a mixture such as air
stealth61 [152]

Answer:

Well there is a lot of differences between the two. Its called homogeneous and Heterogeneous mixtures. Homogeneous mixtures are all the substances are evenly distributed throughout the mixture (salt water, air, blood).  Heterogeneous mixtures are the substances that are not evenly distributed (chocolate chip cookies, pizza, rocks). So Pasta with sauce and meatballs is heterogeneous and air is homogeneous




HOPE THIS HELPS HAVE A GREAT DAY!!~

Explanation:

6 0
2 years ago
Explain the importance of replication in scientific research
SVEN [57.7K]

Answer:

Explanation:

Replication is crucial to science. Every time researcher find something surprising that has to do with science they replicate it.

8 0
3 years ago
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Which system is responsible for carrying oxygen to the muscle
Nitella [24]
Well red blood cells carry oxygen to muscles
Circulatory system is probably the answer you are looking for. 
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How many molecules of hydrogen chloride gas could theoretically be produced at STP by reacting 34.7 liters of hydrogen gas at ST
Kamila [148]

Answer:

69.4

Explanation:

There isn't one, I just took the test.

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3 years ago
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