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tresset_1 [31]
2 years ago
10

A student wants to investigate competition between two organisms. For the investigation, it

Chemistry
1 answer:
Tanzania [10]2 years ago
7 0

Answer:

i think that the answer is B

Explanation:

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Which internal system is responsible for transporting oxygen and nutrients through an animal's body?
katen-ka-za [31]

Answer:

B: circulatory system

Explanation:

The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.

4 0
2 years ago
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Which of these is a reason why nuclear power is important?
OlgaM077 [116]

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C Fossil fuels will run out soon

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Water is believed to be one of the best fire extinguishers then why it is so that fire in oil spills over ocean/sea is difficult
Eddi Din [679]

Answer:

D

Explanation:

Trust me

6 0
2 years ago
C2H4(g) + H2(g) ----> C2H6(g)
sertanlavr [38]
D because wants you add the equation it should increase temp but decrease the value in pressure
4 0
3 years ago
The maximum amount of nickel(II) cyanide that will dissolve in a 0.220 M nickel(II) nitrate solution is...?
sweet [91]

Answer : The maximum amount of nickel(II) cyanide is 5.84\times 10^{-12}M

Explanation :

The solubility equilibrium reaction will be:

                       Ni(CN)_2\rightleftharpoons Ni^{2+}+2CN^-

Initial conc.                        0.220       0

At eqm.                             (0.220+s)   2s

The expression for solubility constant for this reaction will be,

K_{sp}=[Ni^{2+}][CN^-]^2

Now put all the given values in this expression, we get:

3.0\times 10^{-23}=(0.220+s)\times (2s)^2

s=5.84\times 10^{-12}M

Therefore, the maximum amount of nickel(II) cyanide is 5.84\times 10^{-12}M

7 0
2 years ago
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