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Setler79 [48]
3 years ago
5

Water and carbon dioxide are similar because they both contain at least one oxygen

Chemistry
1 answer:
nadezda [96]3 years ago
6 0
Yes that is true.
Water: H_2 O
Carbon dioxide: CO_2
Both have O
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The electron configuration for neon (atomic number = 10) is NOT 1s22s12p6. Which of the following are reasons why? (Mark all tha
Inessa [10]

Answer:

The answer to your question is:  B and C.

Explanation:

Neon atomic number = 10

Electron configuration is not :   1s²2s¹2p⁶  .

This electron configuration is for fluor (9 electrons) because is we sum up the electrons ( 2 + 1 + 6) the result is 9.

A)The 3s orbital should be part of the configuration.  This is not the right reason.

B)The total number of electrons is incorrect.  This correct, the number of electrons is 9 instead of 10.

C)The 2s orbital does not have enough electrons.  This option is correct, 2s must have 2 electrons and it only has 1.

D) The 1s orbital does not have enough electrons. This option is incorrect, 1s orbital can have only 2 electrons.

7 0
2 years ago
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What are the similarities between a chemical change and a physical change?
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Answer:

Physical and chemical changes are similar because they are both caused by the interaction of two or more particles.

Explanation:

Physical and chemical changes are similar because they are both caused by the interaction of two or more particles. Physical changes occur through vibrations, impacts, and other forms of movement. Chemical changes are caused by the interaction of two or more atoms or molecules.

7 0
2 years ago
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Earth's Revolution question:
Murljashka [212]

Answer:

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7 0
3 years ago
According to the phase diagram for H₂O, what happens to the phases of
sergejj [24]

Answer:

"A", "water changes from a gas to a solid to a liquid", according to this phase diagram, at at 0°C, as pressure is increased from 0atm to 10atm.

Explanation:

The question asks what happens at 0°C, as pressure is increased from 0atm to 10atm.

According to the question, the temperature is held constant.  The pressure changes.  In the phase diagram, we find the temperature 0°C on the horizontal axis, and all points where the temperature are 0°C are along that vertical line.

Since the pressure starts at 0atm and increases to 10atm, we start at the bottom, and move upward along that line, to see what phases of matter the substance changes to.

At the bottom, it is initially in a "gas" phase.  As it moves up, it transitions to a "solid" phase.  Later, as it continues moving up, it changes again into a "liquid" phase.

Thus, the answer would be "A", "water changes from a gas to a solid to a liquid", according to this phase diagram, at at 0°C, as pressure is increased from 0atm to 10atm.

8 0
1 year ago
A 0.175 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.27° in a 1-dm sample
-BARSIC- [3]

Answer:

The specific rotation of D is 11.60° mL/g dm

Explanation:

Given that:

The path length (l) =  1 dm

Observed rotation (∝) = + 0.27°

Molarity = 0.175 M

Molar mass = 133.0 g/mol

Concentration in (g/mL) = 0.175 mol/L × 133.0 g/mol

Concentration in (g/mL) = 23.275 g/L

Since 1 L = 1000 mL

Concentration in (g/mL) = 0.023275 g/mL

The specific rotation [∝] = ∝/(1×c)

= 0.27°/( 1  dm ×  0.023275 g/mL )

= 11.60° mL/g dm

Thus, the specific rotation of D is 11.60° mL/g dm

3 0
3 years ago
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