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Gnom [1K]
3 years ago
5

Hiya if you answr more than 5 = extra points please answer and least 3 lol and maybe explain how i can do it

Chemistry
1 answer:
Harrizon [31]3 years ago
3 0

Answer:

copy and paste them into the search and all of the answers come up trust me

Explanation:

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Which is a unit of density?<br><br> A) cm3/g <br> B) g/cm <br> C) g/cm3 <br> D) ml/g
tigry1 [53]
B}g/cm is a unit of density
4 0
4 years ago
At a certain temperature the vapor pressure of pure heptane (C_7 H_16) is measured to be 170. torr. Suppose a solution is prepar
steposvetlana [31]

Explanation:

The given data is as follows.

       Pressure (P) = 170 torr,      mass of heptane (m) = 86.7 g

First, we will calculate the number of moles as follows.

          No. of moles = \frac{mass}{\text{molar mass}}

                        = \frac{86.7 g}{100 g/mol}

                        = 0.867 mol

Now, the number of moles of CH_{3}COBr are calculated as follows.

     No. of moles =  \frac{mass}{\text{molar mass}}

                           =  \frac{125}{122.9}    

                           = 1.07

Therefore, mole fraction of heptane will be calculated as follows.

     Mole fraction = \frac{\text{moles of heptane}}{\text{total moles}}

                           = \frac{0.867}{0.867 + 1.07}

                           = \frac{0.867}{1.937}

                           = 0.445

Now, we will calculate the partial pressure of heptane as follows.

            P_{A} = x_{A}P^{o}_{A}

                 = 170 \times 0.445      

                 = 75.65 torr

Thus, we can conclude that the partial pressure of heptane vapor above this solution is 75.65 torr.

8 0
4 years ago
Comparing the sizes of these atoms, which atom is smallest?
bixtya [17]

Answer:

xenon

Explanation:

Rb>Zr>Ag>Pb>Xe

5 0
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Which of the following molecules can be used in catabolic reactions to generate the carbon backbones required for gluconeogenesi
sleet_krkn [62]

Answer:

The correct option is A

Explanation:

Some amino acids, called glucogenic amino acids, when catabolized convert there carbon backbones to tricarboxylic acid (TCA) cycle intermediates. These intermediates can be subsequently metabolized into carbon dioxide and water with the release of ATP or the formation of glucose (known as gluconeogenesis.

<u>All amino acids (with the exception of leucine and lysine) are glucogenic and can thus generate the carbon backbones required for gluconeogenesis</u>. Thus, the correct option is a.

3 0
3 years ago
1. Suppose you had 58.44 grams of NaCl and you dissolved it in exactly 2.00 L of solution.
Margarita [4]
.500M or .500 mol/liters
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