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3 years ago

9

A group of elements with similar properties, which usually falls into columns on the periodic table. A.period b.ductile c.atomis

d.family

1 answer:

Sati [7]3 years ago

5 0

D. Family, The vertical columns on the periodic table are called groups or families because of their similar chemical behavior.

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Over the course of many years, a rural farm town becomes more urban. Which of the following will most likely happen in the town

MrRa [10]

Answer:

Explanation:

Rivers may be contaminated by sewage.

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3 years ago

__________ force is the force of attraction and repulsion between subatomic particles.

SpyIntel [72]

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3 years ago

A 110.0 mL sample of 0.040 M Ca2+ is titrated with 0.040 M EDTA at pH 9.00. The value of logKf for the Ca2+−EDTA complex is 10.6

Alex787 [66]

Answer : The conditional formation constant is $1.83\times 10^9$

Explanation :

First we have to calculate the formation constant.

As we are given that:

$\log k_f=10.65$

$k_f=10^(10.65)$

$k_f=4.47\times 10^{10}$

Thus, the formation constant is $4.47\times 10^{10}$

Now we have to calculate the conditional formation constant.

The expression used as:

$k'_f=\alpha_y^+\times k_f$

where,

$k'_f$ = conditional formation constant = ?

$\alpha_y^+$ = activity coefficient at pH 9.00 = 0.041

$k_f$ = formation constant = $4.47\times 10^{10}$

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

$k'_f=(0.041)\times (4.47\times 10^{10})$

$k'_f=1.83\times 10^9$

Therefore, the conditional formation constant is $1.83\times 10^9$

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3 years ago

The Statue of Liberty changing from Copper to Green is an example of...

Troyanec [42]

Answer:

answering this for points! Sorry! but its probably A OR C

Explanation:

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3 years ago

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4 years ago