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otez555 [7]
1 year ago
8

Migration is _______. a. the movement of organisms from a native location to a foreign location b. the movement of organisms fro

m a foreign location to a native location c. the movement of organisms from their water supply to their food supply d. the seasonal movement of organisms between locations Please select the best answer from the choices provided A B C DMigration is _______. a. the movement of organisms from a native location to a foreign location b. the movement of organisms from a foreign location to a native location c. the movement of organisms from their water supply to their food supply d. the seasonal movement of organisms between locations Please select the best answer from the choices provided A B C D
Chemistry
2 answers:
MArishka [77]1 year ago
8 0

Answer:

D is the correct answer. the seasonal movement of organisms between locations

sergij07 [2.7K]1 year ago
4 0

Answer:

A

Explanation:

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Hey yall, join on kahoot: 1088134
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Answer:

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3 years ago
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Enough of a monoprotic weak acid is dissolved in water to produce a 0.0144 0.0144 M solution. The pH of the resulting solution i
alexdok [17]

Answer:

The value of dissociation constant of the monoprotic acid is 1.099\times 10^{-3}.

Explanation:

The pH of the solution = 2.46

pH=-\log[H^+]

2.46=-\log[H^+]

[H^+]=0.003467 M

HA\rightleftharpoons H^++A^-

Initially

0.0144         0      0

At equilibrium

(0.0144-x)       x       x

The expression if an dissociation constant is given by :

K_a=\frac{[A^-][H^+]}{[HA]}

K_a=\frac{x\times x}{(0.0144-x)}

x=[H^+]=0.003467 M

K_a=\frac{0.003467 \times 0.003467 }{(0.0144-0.003467 )}

K_a=1.099\times 10^{-3}

The value of dissociation constant of the monoprotic acid is 1.099\times 10^{-3}.

3 0
3 years ago
Which of the following types of mixtures exhibit the Tyndall effect?
Alekssandra [29.7K]
<span>C) <u>Colloids</u></span><span>

Colloids have small non-dissolved particles that flow around in the mixture. These particles do not settle over time. When a light is shined on colloids the scattering characteristic of the Tyndall effect are visable.</span>
4 0
3 years ago
An amide may be produced by reacting an acid chloride with
Elanso [62]

Answer:

An amide may be produced by reacting an acid chloride with ammonia.

8 0
3 years ago
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Which of the following has no electrons? Use a periodic table. Question 1 options: H He H– He 2+ Save
Elodia [21]

An electron is a negatively charged subatomic particle present in the space outside the nucleus of an atom. The loss of electron from an atom results in the formation of cation whereas gaining of electron by an atom results in the formation of anion. The cation possesses positive charge due to loss of electron and anion possesses negative charge due to gain of electron.

The neutral atom has no charge on it.

For given atomic symbols:

  • H

The atomic number of hydrogen is 1 and the given symbol has no charge that means it is in its neutral state. So, the number of electrons in H is 1.

  • He

The atomic number of helium is 2 and the given symbol has no charge that means it is in its neutral state. So, the number of electrons in He is 2.

  • H^{-}

The atomic number of hydrogen is 1 and the given symbol has a negative charge that represents a gain of electron. So, the number of electrons in H^{-} is 2.

  • He^{2+}

The atomic number of helium is 2 and the given symbol has two positive charge that represents loss of two electrons. So, the number of electrons in He^{2+} is 0.

Hence, He^{2+} has no electrons.

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3 years ago
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