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mixer [17]
3 years ago
8

A sample of an unknown compound is vaporized at 130°C . The gas produced has a volume of 1280mL at a pressure of 1.00 atm and it

weighs 4.03g
Assuming the gas behaves as an ideal gas under these conditions, calculate the molar mass of the compound. Round your answer to 3 significant digits.
Chemistry
1 answer:
loris [4]3 years ago
8 0
This is an ideal gas law question. It uses the ideal gas law equation, PV =nRT.
P = pressure, V = volume, n = moles, R is the constant, and T is temperature in kelvin. The temperature needs to be converted Kevin first. To convert from Celsius to Kevin, you add 273, meaning that the temp in Kevin is 403K. Then plug all the info into the equation to solve for moles.
(1.00atm)(1.280L)=n(0.0821)(403K)
n = 0.0387moles

To find molar mass, divide mass by moles.

4.03g / 0.0387moles = 104.17g/mol

104g/mol rounded to three significant digits
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Mashutka [201]

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  • Therefore, a transferase and an oxidoreductase are the two groups of enzymes required.

<h3>Which kind of interaction between proteins and the dextran column material is most likely to take place?</h3>
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<h3>Two out of the four proteins would adhere to a cation-exchange column at what buffer pH? </h3>
  • Only positively charged proteins can bind to a cation-exchange column, and this can only happen when the pH is lower than the pI.
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To learn more about hydroxyquinoline visit:

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4 0
2 years ago
Which term names the main class of the chemical that makes up bread?
Anettt [7]
Answer is: carbohydrates.
Main component of bread is flour and main component of flout is starch.
Starch<span> is a </span>polymeric carbohydrate<span> consisting of a large number of </span>glucose units bonded by glycosidic bond. S<span>tarch is a white, tasteless and odorless powder that is insoluble in cold water or alcohol.</span>

5 0
4 years ago
Read 2 more answers
5.4 When looking down the C{{TOP-HAT-MATH-TOKEN-0}}-C{{TOP-HAT-MATH-TOKEN-1}} bond in 2,3-dimethylbutane, what is the most stabl
AURORKA [14]

Answer:

The most stable conformer would be the anti-conformer when the substituent methyl groups are farthest away from each other.

Explanation:

Isomers are chemical compounds with the same molecular formula but with different molecular structures.

Conformers are a special type of isomers that produce different structures when the substituents of a Carbon-Carbon single bond (C-C) are rotated.

In 2,3 dimethyl butane, the substituent methyl groups are located around the second and third Carbon to Carbon single bond.

To achieve a stable configuration, the methyl group substituents need to be as far apart as possible (that is, in an anti-position) to minimise repulsion.

The closer the methyl groups are to each other, the more they repel each other and the more unstable the conformer becomes.

7 0
3 years ago
In the following reaction 6.13g of water (H2O) is produced the theoretical
Vlad [161]

Answer:

C = 75%

Explanation:

Theoretical yield = 8.17g

Actual yield = 6.13g

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Percentage yield = (actual yield / theoretical yield) * 100

% yield = (6.13/8.17) * 100

Percentage yield = 0.7503 * 100

Percentage yield = 75.03%

4 0
3 years ago
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The melting point of any substance is its physical property.

colour of any substance is also its physical property.

However TNT is a chemical property. It is explosive as it dissociates into nitrogen gas , water, Carbon monoxide and carbon.

the reaction can be given as

2 C7H5N3O6 ---> 3 N2 + 5 H2O + 7 CO + 7 C

Due to carbon it gives as sooty flames

3 0
3 years ago
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