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lbvjy [14]
3 years ago
5

Choose the incorrect answer below concerning absolute zero.

Chemistry
2 answers:
Stells [14]3 years ago
8 0
Absolute zero is zero K (Kelvin) that is the complete absence of any molecular movement.
babymother [125]3 years ago
6 0

Answer:

. is equal to 0°C ( notice that the question is which statement is inocrrect)

Explanation:

The absolute zero corresponds to the zero of the absolute temperature scale, whose unit of measure is the Kelvin degree, (abbreviated K grade, in honor of the physicist Lord Kelvin), and its value coincides with a temperature of 273.15 ° C below zero (or −273.15 ° C) on the most daily scale of degrees Celsius or Celsius. Budini also clarified that a temperature difference of one degree Celsius is the same as a temperature difference of one degree Kelvin-

"We call absolute zero of temperature the value for which the internal movement of the atoms or molecules that constitute matter ceases. Temperature is a measure of the energy of motion of the microscopic constituents of a physical system. Therefore, one can to think that if it is possible to lower the temperature of a system then it should be possible to reach a (zero) temperature value for which there is no internal movement of its constituents. It would be a kind of frozen state of any material or system"

This means that no matter what substance, material or system is spoken of, such a system cooled to absolute temperature zero will have all its motionless constituent particles, there will be no internal energy of motion.

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Which ion below is present in greatest concentration in a basic (alkaline) solution
Nastasia [14]

Answer:

hydroxide ion / OH-

Explanation:

Basic solutions have a greater concentration of hydroxide ions than hydrogen (H+) ions

5 0
3 years ago
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In two or more complete sentences, compare singe displacements reactions and double displacement reactions
vodomira [7]

Answer:

The answer is in the explanation

Explanation:

Single displacement reactions: In these reactions, a more reactive element kicks out a less reactive element from a compound.

Ex.  Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(g)

In this example, Zn is more reactive than H, then Zn displaces H from the compound.

Double displacement reactions: In these kind of reactions 2 elements are displaced from the different compounds, these elements interchange positions.

Ex. CuCl2(aq) + 2 AgNO3(aq) → Cu(NO3)2(aq) + 2 AgCl(s)

In the example, Cu displaces Ag and Ag displaces Cu, they interchange positions.

4 0
3 years ago
How many moles are in 3.0g of A1203?
vfiekz [6]

Answer:

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Explanation:

4 0
3 years ago
If element x forms the oxides xo and x2o3 the oxidation numbers of element x are
Deffense [45]

Answer:

b) +2 and +3.

Explanation:

Hello,

In this case, given the molecular formulas:

XO

And:

X_2O_3

We can relate the subscripts with the oxidation states by knowing that they are crossed when the compound is formed, for that reason, we notice that oxygen oxidation state should be -2 for both cases and the oxidation state of X in the first formula must be +2 since both X and O has one as their subscript as they were simplified:

X^{+2}O^{-2}

Moreover, for the second case the oxidation state of X should be +3 in order to obtain 3 as the subscript of oxygen:

X_2^{+3}O_3^{-2}

Thus, answer is b)+2 and +3

Best regards.

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