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mafiozo [28]
2 years ago
7

Pls help this my final 20 points!!!! Be right

Chemistry
1 answer:
Anastaziya [24]2 years ago
5 0

Answer:

I think it's B

Explanation:

I hope it helps

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Find the volume of 6.45 moles of gas present at a temperature of 27.0oC and a pressure of 675 torr.
maw [93]

<u>Answer:</u> The volume of the gas is 178.76 L

<u>Explanation:</u>

The ideal gas equation is given as:

.......(1)

where

P = pressure of the gas = 675 torr

V = volume of gas = ?

n = number of moles of gas = 6.45 moles

R = Gas constant = 62.36 L.torr/mol.K

T = temperature of the gas = 27^oC=[27+273]K=300K

Putting values in equation 1, we get:

675torr\times V=6.45mol\times 62.36L.torr/mol.K\times 300K\\\\V=\frac{6.45\times 62.36\times 300}{675}=178.76 L

Hence, the volume of the gas is 178.76 L

3 0
3 years ago
Rusting of iron is an example of oxidation reduction or transmutation
shtirl [24]
Oxidation because oxygen causes the metal to corrode
7 0
3 years ago
The diagram shows an animal cell.
vovangra [49]

Answer : The correct option is 'X' (mitochondria).

Explanation :

In the given animal cell diagram,

W represent the vacuole.

X represent the mitochondria.

Y represent the nucleolus.

Z represent the cytoplasm.

The function of vacuole, it stores waste products and balance the pH level of the cell.

The function of mitochondria, most of the respiration reaction occurs in which carbon dioxide is produced by utilizing oxygen.

The function of nucleolus, it contains the hereditary information.

The function of cytoplasm, most of the chemical reaction occurs.

Therefore, the correct answer is 'X' (mitochondria).


8 0
3 years ago
Read 2 more answers
You have 16.0 g of some compound and you perform an experiment to remove all of the oxygen, 11.2 g of iron is left. What is the
Makovka662 [10]

The empirical formula of this compound is Fe_2O_3

<h3>Empirical formula </h3>

To calculate the empirical formula of a compound, the value of moles of each element is needed.

As we have the information of the mass value, we will use the molar mass expression, which corresponds to:

MM_O = 16g/mol\\MM_Fe = 55.8g/mol

                                              MM = \frac{m}{mol}

  • O

                                                   16 = \frac{4.8}{x}

                                                   x = 0.3mol

  • Fe

                                                    55.8=\frac{11.2}{x}\\x = 0.2

As the value of the empirical formula must be an integer, simply multiply the two values ​​by a common factor:

                                                O = 0.3 \times 10 = 3\\Fe = 0.2 \times 10 = 2

                                                       Fe_2O_3

So, the empirical formula of this compound is Fe_2O_3.

Learn more about empirical formula: brainly.com/question/1247523

3 0
2 years ago
If a substance conducts heat easily, it is considered to be a
GrogVix [38]
It is considered to be a conductor 
5 0
3 years ago
Read 2 more answers
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