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Over [174]
4 years ago
5

Please help both these answers use the graph . I will mark brainly !!

Chemistry
1 answer:
____ [38]4 years ago
3 0

1 is 4

2 is d

hope it helps


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PLZZZ HELP FASSSSSSSSSSSSTTTTTTTTTTTTT
aleksandrvk [35]

Answer:

i think multipling 30 to the 40

30 × 40 = 1200ppt

7 0
3 years ago
How many electrons are in O2-?
egoroff_w [7]

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There will be 16 electrons in O2-

5 0
3 years ago
Chicken lay more eggs when happy
klasskru [66]

Answer:

yeah that is true

Explanation:

chickens do lay more eggs when they are happy

5 0
3 years ago
Under identical conditions, separate samples of O2 and an unknown gas were allowed to effuse through identical membranes simulta
Brut [27]

Answer:

The molar mass of unknown gas is 145.82 g/mol.

Explanation:

Volume of oxygen gas effused under time t = 8.24 mL

Effusion rate of oxygen gas = R=\frac{8.24 mL}{t}

Molar mass of oxygen gas = 32 g/mol

Volume of unknown gas effused under time t = 3.86 mL

Effusion rate of unknown gas = R'=\frac{3.86 mL}{t}

Molar mass of unknown gas = M

Graham's Law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

\frac{R}{R'}=\sqrt{\frac{M}{32 g/mol}}

\frac{\frac{8.24 mL}{t}}{\frac{3.86 mL}{t}}=\sqrt{\frac{M}{32 g/mol}}

M=\frac{32 g/mol\times 8.24 \times 8.24}{3.86\times 3.86}=145.82 g/mol

4 0
3 years ago
Which type of scientist would most likely study how electricity could be
Nikolay [14]

Electrical engineers are the scientists that study the production of electricity more efficient.

<h3>Which type of scientist would study how electricity could be produced more efficiently?</h3>

Electrical engineers are the type of scientist that would most likely study how electricity could be produced more efficiently because they produced new technologies which are cost efficient as well as produce high amount of electricity.

So we can conclude that electrical engineers are the scientists that study the production of electricity more efficient.

Learn more about electricity here: brainly.com/question/776932

#SPJ1

6 0
2 years ago
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