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Andreas93 [3]
3 years ago
14

What are groups on the periodic table? How many are there?

Chemistry
2 answers:
Amiraneli [1.4K]3 years ago
6 0

Explanation:

Groups are numbered 1–18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.

s344n2d4d5 [400]3 years ago
5 0

Answer:

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.

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Preparation the buffer solution: initial pH of buffer solution: ____ Titration of a weak acid with a strong base: initial pH of
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Answer:

pH of buffer solution is 7.0

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Explanation:

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2 years ago
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5 0
3 years ago
The Big Bang theory states that ________.
cluponka [151]

I believe the correct answer is B

8 0
3 years ago
Consider the reaction: A &lt;=&gt; B. Under standard conditions at equiliubrium, the concentrations of the compounds are [A] = 1
Katen [24]

Answer:

Keq'>1\\\Delta G'

Explanation:

Hello,

In this case, for the given reaction, the equilibrium constant turns out:

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Nonetheless, we are asked for the reverse equilibrium constant that is:

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In such a way, the Gibbs free energy turns out:

\Delta G'=-RTln(Keq')\\

Now, since the reverse equilibrium constant is greater than zero its natural logarithm is positive, therefore with the initial minus, the Gibbs free energy is less than zero, that is, negative.

7 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!
stealth61 [152]
Hello
The answer is b
Have a nice day
7 0
3 years ago
Read 2 more answers
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