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aev [14]
3 years ago
9

In Period 2, as the elements are considered from left to

Chemistry
1 answer:
Elza [17]3 years ago
5 0

Answer:

it will option B ,hope it helps

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How do many indoor environments generally compare to outdoor environments in terms of pollution? Indoor environments are much le
brilliants [131]
"Indoor environments are much less polluted than outdoor <span>environments" is the best option since indoor environments often rely on separate air and ventilation systems. </span>
4 0
3 years ago
What is the pH of a solution with hydrogen ion concentration of 1 x 10^–6 M?
kakasveta [241]

Answer:

The pH of the solution is 6,00.

Explanation:

The pH indicates the acidity or basicity of a substance. pH values between 0 and less than 7 indicate acidic solutions, 7 neutral and greater than 7 to 14 basic. It is calculated as:

pH = -log (H +)

pH= -log (1x10^-6)

<em>pH= 6, 00</em>

7 0
3 years ago
Is 6.0 × 10 to the negative 4th power is a significant figure?​
Dmitry_Shevchenko [17]

Answer:

Yes

Explanation:

First remember that a significant figure are basically values that contribute to the precision of a value. In any scientific notation the values are significant figures because these values stay the same. In this case we have two significant figures which is 6 and 0, you can further prove that they are significant figures by converting the notation into standard form.

6.0\times10^{-4}

Negative so move the decimal point to the left:

=0.00060

6 and 0 are the significant figures in this standard notation because it's precise to it's actual value which is 6.0.

To sum up, the values you have on the left side of a notation are significant figures since they will not change no matter if it's standard or scientific notation meaning it's precise.

Hope this helps.

6 0
3 years ago
Sylvanite is a mineral that contains 28.0% gold by mass. How much sylvanite would you need to dig up to obtain 85.0 g of gold?
Len [333]
I think this is 65.23 im not sure tho. 
7 0
4 years ago
In an exothermic reaction, energy is transferred from
vivado [14]
System to surroundings since energy is released in an exothermic reaction
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4 years ago
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