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kvasek [131]
3 years ago
6

yo pls help All organisms have a barrier that separates their internal environment from the outside world. Which of the followin

g organ systems forms a barrier between the internal and external environments for humans? A. integumentary system B. circulatory system C. nervous system D. excretory system
Chemistry
2 answers:
Leokris [45]3 years ago
5 0

Answer:

c

Explanation:

Makovka662 [10]3 years ago
4 0

Answer:

That would be the Integumentary system.

Explanation:

The integumentary system is the system of the body that produces hair, skin, etc.

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Explanation:

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Which statement best describes the formula equation cl1(g) + 2kbr(aq) —&gt; 2kcl(aq)+br2(i)
Zigmanuir [339]

Answer:

The chlorine gas and potassium bromide solution react to form liquid  bromine and potassium chloride solution.

Explanation:

Chemical equation:

Cl₂(g) + KBr (aq) → KCl (aq) + Br₂(l)

Balanced chemical equation:

Cl₂(g) + 2KBr (aq) → 2KCl (aq) + Br₂(l)

This equation showed that the chlorine gas and potassium bromide solution react to form liquid  bromine and potassium chloride solution.

Chlorine is more reactive than bromine it displace the bromine from potassium and form potassium chloride solution.

The given equation is balanced and completely hold the law of conservation of mass.

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by french chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

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3 years ago
The number of neutrons and protons in the nuclei of two atom A and B is as follow: [A] proton= 8 and neutron = 8, [B] proton = 8
sveticcg [70]
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Give the orbital notation for a neutral atom of titanium
dedylja [7]

Answer:

Explanation:

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How many protons are in Calcium - 41?
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