Which list of the phases of H2O is arranged in order of increasing entropy?

1 answer:

4 0

The answer is (2). The entropy is measured the disorder degree. So the increasing of entropy of the phases are solid, liquid and gas. So the answer is ice, liquid water and steam.

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Kinetic energy remains conserved in an elastic collision.

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What does the atomic mass of a neutral atom tell you?

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What is the daughter nucleus produced when 188 Hg Hg188 undergoes positron emission? Replace each question mark with the appropr

Alenkasestr [34]

Answer: The daughter nucleus produced when 188 Hg undergoes positron emission is gold.

Explanation:

Positron emission: It is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. This is also known as -decay. In this the mass number remains same.

General representation of an element is given as: $_Z^A\textrm{X}$

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element

The chemical equation for positron emission is represented as:

$_Z^A\textrm{X}\rightarrow _{Z-1}^A\textrm{Y}+_{+1}^0e$

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3 years ago

A student determines the molar mass of acetone

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The Formula of Acetone is $C_3H_6O$
To find the Mass Molar of a compound, you add the Atomic weights of it's atoms.
If you check the Periodic table:
Atomic Weight of Carbone C: 12.0107
Atomic Weight of Hydrogen: 1.00794
Atomic Weight of Oxygen: 15.9994

So, you got:
Total Atomic Weight of Carbone in Acetone: 12.0107 * 3 = 36.0321
Total Atomic Weight of Hydrogen in Acetone: 1.00794 * 6 = 6.04764
Total Atomic Weight of Oxygen in Acetone = 15.9994 * 1 = 15.9994

Now, you add this numbers
36.0321 + 6.04764 + 15.9994 = 58.07914

So, the Molar Mass of Acetone is 58.09714 g/mol

Hope this Helps :D

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