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Aliun [14]
3 years ago
13

On the periodic table, what is a group? For the main groups, what characteristic

Chemistry
2 answers:
Lemur [1.5K]3 years ago
8 0

Answer:

metallic that is one thanks

Semmy [17]3 years ago
3 0

Answer:

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.

Explanation:

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How many molecules of N2O gas are in 250 L at STP?
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Answer:

I have no idea all I know is poop.

Explanation:

Because I said so

4 0
2 years ago
14. In the image below, a similarity between the salad dressing and the
Yanka [14]

Answer:

mixture

Explanation:

the other logical option would be compound but a compound consists of 2 or more chemically bonded elements and salad dressing nor raisin brand are elements.

5 0
3 years ago
Would it be D....????<br> HELPPPPPP
AlekseyPX

Answer:

yes

Explanation:

6 0
4 years ago
Describe at least two ways that a researcher can minimize experimental errors in an investigation.
Leto [7]
Experimental errors can be of two kinds: human error and analytical error. Analytical error can be corrected easily. You just have to use instruments that are of high precision. For example, instead of using the platform balance, use the analytical balance which displays 4 decimal places to be highly accurate. For the human error, this is subjective. The only way to correct human error is to be more meticulous on your data measurements.
8 0
3 years ago
At what temperature will 0.654 moles of helium gas occupy 12.30 liters at 1.95 atmospheres?
DedPeter [7]

Answer:

447,25k

Explanation:

According to the ideal gas law

PV=nRT

Where:

P: is the pressure of the gas in atmospheres.

V: is the volume of the gas in liters.

n: number of moles of the gas

R: ideal gas constant

T: absolute temperature of the gas in kelvin

now using:

T=\frac{PV}{nR}\\ \\T=\frac{12,3L.1,95atm}{0,654mol.0,082(L.atm/K.mol)}\\ \\T=447,25K

3 0
3 years ago
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