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Gelneren [198K]
3 years ago
12

Name two elements whose outer energy levels are complete with two electrons

Chemistry
1 answer:
cluponka [151]3 years ago
4 0

Answer:

ppsuck

Explanation:

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Olin [163]

1. C. Linus Pauling

2. C. chemistry

3. A. atom

4. D. protons, neutrons and electrons

5. B. positively

6. A. negatively

7. C. uncharged

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10. D. protons in the nucleus

11. A. atoms

12. B. the pull of gravity on matter

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19. A. the gaseous state

20. C. a number and a unit

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3 0
3 years ago
88.5 mol of P4O10 contains how many moles of P?
Dennis_Churaev [7]
Looking at the formula, each mol of P4O10 contains 4 mol of P, so 
(58.5 mol P4O10) x (4 mol P/ 1 mol P4O10) = 234 mol
6 0
3 years ago
How many liters of space will 0.890 coles of Co2 occupy at STP
jonny [76]

Answer: 7.3 liters

Explanation:

8 0
4 years ago
Read 2 more answers
if a gas sample has a pressure of 761 mmhg at 0.00°c by how much does the temperature have to decrease to lower the pressure to
Nady [450]
<h3>Answer:</h3>

272.43 K or -0.718°C

<h3>Explanation:</h3>

We are given;

The initial pressure,P1 as 761 mmHg

Initial temperature, T1 as 0.00°C which is equivalent to 273.15 K

Final pressure as 759 mmHg

We are required to calculate the final temperature;

According to pressure law, the pressure of a gas and absolute temperature are directly proportional at constant volume.

That is; Pα T

Therefore, at varying pressure and temperature,

\frac{P1}{T1}=\frac{P2}{T2}

To get final temperature;

T2=\frac{P2T1}{P1}

T2=\frac{(759 mmHg)(273.15K)}{761 mmHg}

T2=272.43K

Therefore, the final temperature will be 272.43 K or -0.718°C

6 0
3 years ago
What property do all of the group 18 elements have that make them stand out from other elements?
matrenka [14]
They are very stable (not reactive).

This is because their outer shell has a total of 8 valence electrons. All elements strive to get towards a full outer shell, but since these elements already have a full outer shell, they are fairly unreactive.
5 0
3 years ago
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