Why are city streets so vital to the functioning of a city, as well as the people living within it?

1 answer:

7 0

In the city, there is more people there including more resources. They also have a lot of good stuff in the city because they know it will attract a lot of people there because cities are so crowded.

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How many bromine atoms are present in 37.5 g of CH2Br2?

ella [17]

37.8 g CH2Br2 X (1 mol CH2Br2 / 173.83 g) = 4.60X10^-3 mol CH2Br2

4.60X10^-3 mol CH2Br2 X (2 mol Br / 1 mol CH2Br2) X 6.02X10^23 atoms/mol = 5.54X10^21 bromine atoms

5 0

2 years ago

In a mixture of hydrogen and nitrogen gases, the mole fraction of nitrogen is 0.333. If the partial pressure of hydrogen in the

notka56 [123]

Answer:

$P_T=112.4torr$

Explanation:

Hello there!

In this case, since these problems about gas mixtures are based off Dalton's law in terms of mole fraction, partial pressure and total pressure, we can write the following for hydrogen, we are given its partial pressure:

$P_{H_2}=x_{H_2}*P_T$

And can be solved for the total pressure as follows:

$P_T=\frac{P_{H_2}}{x_{H_2}}$

However, we first calculate the mole fraction of hydrogen by subtracting that of nitrogen to 1 due to:

$x_{H_2}+x_{N_2}=1\\\\x_{H_2}=1-0.333=0.667$

Then, we can plug in to obtain the total pressure:

$P_T=\frac{75.0torr}{0.667}\\\\P_T=112.4torr$

Regards!

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2 years ago

Chemical formula name for V2(SO2)3 (aq) explain why

goldenfox [79]

This is the chemical doula for salt which is a polyatomic anion very prevalent in out daily lives e.g.

Salts, acid derivatives, and peroxides of sulfate are widely used in industry.

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2 years ago

Which Of the following compounds is an electrolyte?

Anettt [7]

Hello,

Here is your answer:

The proper answer to this question is option D "sodium hydroxide".

Here is how:

Sodium Hydroxide its a white substance that is a electrolyte.

Your answer is D.

If you need anymore help feel free to ask me!

Hope this helps!

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2 years ago

Select all that apply. Which of the following are characteristics of bases. contain hydroxide ion or produce it in a solution ta

Blababa [14]

I know tasting bitter is one

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3 years ago

Read 2 more answers