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Olin [163]
3 years ago
7

GIVING BRAINLY, FOLLOW, 5 STARS AND HEARTS

Chemistry
1 answer:
Alina [70]3 years ago
8 0

Answer:

The one on the top,'' As the water cool, it is returned to the boiler where it is heated,''

Explanation:

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Question 8
Masteriza [31]
AgNO₃ and Cu(NO₃)₂  are dissolved in water
6 0
3 years ago
The major source of aluminum in the world this bauxite (mostly aluminum oxide). It’s thermal decomposition can be represented by
Artyom0805 [142]

Answer:

The correct answer is 32.2 grams.

Explanation:

Based on the given information, the enthalpy of formation for aluminum oxide is 1676 kJ/mol. It signifies towards the energy that is required to generate aluminum and oxygen, and both of these exhibit zero enthalpy of formation. Therefore, the ΔHreaction is the required energy to generate 2 moles of aluminum. Thus, the energy needed for the formation of single mole of aluminum is,  

ΔHrxn = 1676/2 = 838 kJ/mol

Q or the energy input mentioned in the given case is 1000 kJ. Therefore, the number of moles of Al generated is,  

(1000 kJ) / (838 kJ/Al mole) = 1.19 moles of Aluminum

The grams of aluminum produced can be obtained by using the formula,  

mass = moles * molecular mass

= 1.19 * 26.98

= 32.2 grams.  

7 0
2 years ago
Select the correct answer.
timofeeve [1]

Answer:

D

Explanation:

4 0
3 years ago
Read 2 more answers
Which of these events leaves small pieces of rocks in new places? (4 points)
icang [17]
A. deposition

this means that it was moved from one place to another and can be transported by ice, water, gravity, or wind.
5 0
2 years ago
Describe the intermolecular forces that must be overcome to convert these substances from a liquid to a gas: (a) SO2, (b) CH3COO
Andre45 [30]
You need to find which intermolecular forces are between the molecules
dipole-dipole,h bonds, etc.
I'm not very good at explaining but this is what my prof said to help us

Identify the class of the molecule or molecules you are given. Are they nonpolar species, ions or
do they have permanent dipoles? Is there only one species or are there two?
In the case of ONE species (i.e., a pure substance), the intermolecular forces will be between
molecules of the same type. So if you are dealing with ions, the intermolecular forces will be ION-
ION or IONIC. If you are dealing with dipoles, then the intermolecular forces will be DIPOLE-
DIPOLE. If you are dealing with nonpolar species, the intermolecular forces will be DISPERSION
or VAN DER WAALS or INDUCED DIPOLE-INDUCED DIPOLE (the last three are desciptions
of the same interaction; regrettably we cannot call them nonpolar-nonpolar!).
In the case of TWO species (i.e., a mixture), the intermolecular forces will be between molecules of
one type with molecules of the second type. For example, ION-DIPOLE interactions exist between
ions dissolved in a dipolar fluid such as water.
7 0
3 years ago
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