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kogti [31]
3 years ago
15

At what temperature will 2.5 mol nitrogen gas exert a pressure of 10.0 atm in a 2.0-L container?

Chemistry
1 answer:
suter [353]3 years ago
3 0

Answer:

The answer to your question is T = 97.6 °K

Explanation:

Data

Temperature = T = ?

number of moles = n = 2.5

Pressure = P = 10 atm

Volume = V = 2 l

Constant of ideal gases = 0.082 atm l / mol°K

Process

1.- Write the formula of the ideal gas law

         PV = nRT

-Solve for T

          T = PV / nR

2.- Substitution

           T = (10 x 2) / (2.5 x 0.082)

3.- Simplification

           T = 20 / 0.205

4.- Result

           T = 97.6 °K

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Answer:

D

Explanation:

6 0
3 years ago
45.7 grams of calcium chloride reacts with an excess of aluminum oxide. How many grams of aluminum chloride will be produced
damaskus [11]
Molar mass (CaCl2) = 40.1 +2*35.5 = 111.1 g/mol
Molar mass (AlCl3) = 27.0 +3*35.5= 133.5 g/ mol

                                               
3CaCl2+Al2O3 -------->3CaO +2AlCl3
mole from reaction              3 mol                                              2 mol
mass from reaction         3mol* 111.1g/mol                             2 mol*133.5g/mol
                                               333.3 g                                            267.0 g
mass from problem              45.7 g                                               x g

Proportion:
  333.3 g  CaCl2  -------   267.0 g AlCl3
  45.7 g   CaCl2   --------   x g    AlCl3

x=45.7*267.0/333.3= 36.6 g AlCl3
5 0
3 years ago
Which of the following properly describes the movement of atoms as they represent the states of matter? Atoms making liquids hav
7nadin3 [17]

Answer:

Atoms making liquids have less attraction than solids, but more than gases

Explanation:

The attraction between atoms in different molecules in a solid is very strong due to strong intermolecular forces present in a solid. However, such intermolecular forces are weaker in liquids than in solids.

This implies that the solid has higher intermolecular forces of attraction compared to gases and liquids. Based on the negligible degree of intermolecular forces between them, a gas has the weakest intermolecular forces hence the atom has very minimal interaction between them.

7 0
3 years ago
Which one of the following statements is FALSE? a In a neutralization reaction, an acid reacts with base to produce a salt and H
pishuonlain [190]

Answer: Option (c) is the correct answer.

Explanation:

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As a result, it will not dissociates easily to give hydrogen ion. Hence, it acts as a weak acid.

A neutralization reaction is defined as a reaction in which an acid reacts with a base to give salt and water. For example, HCl + NaOH \rightarrow NaCl + H_{2}O

It is true that, spectator ions "appear in the total ionic equation for a reaction, but not in the net ionic equation".

Titration is defined as a process in which concentration of an unknown solution is determined using a solution of known concentration.

Thus, we can conclude that the statement HF, HCl, and HNO3 are all examples of strong acids, is false.

7 0
3 years ago
Which of the following is the correct definition of chemical energy?
Anna11 [10]

Answer:

A

Explanation:

energy stored in chemical bonds of molecules

5 0
3 years ago
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