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Naya [18.7K]
3 years ago
15

For which of the following reactions is ΔH∘rxn equal to ΔH∘f of the product(s)?

Chemistry
1 answer:
Stels [109]3 years ago
3 0
Try your luck kid hope it helps 
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Use the graph to determine which is greater, the heat of fusion or the heat of vaporization. Explain how you used the graph to d
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Answer:

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3 0
3 years ago
A sample of carbon dioxide gas that has a volume of 14.6 L at STP contains how many
Nana76 [90]

Answer:

n = 0.651 mol

Explanation:

Given data:

Volume of CO₂ = 14.6 L

Temperature = standard = 273.15 K

Pressure = standard = 1 atm

Number of moles of CO₂ = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

by putting values,

1 atm × 14.6 L = n × 0.0821 atm.L/ mol.K   × 273.15 K

14.6 L. atm =  n × 22.43atm.L/ mol

n = 0.651 mol

7 0
2 years ago
Which of these statements about the Plum-Pudding Model is incorrect?
Licemer1 [7]

Answer:

It is a model of the atom that has electrons surrounding the nucleus


Step by step explanation:

7 0
3 years ago
Did Chelate compounds increase the rate of reaction?
Viefleur [7K]

Answer:

Chelate, any of a class of coordination or complex compounds consisting of a central metal atom attached to a large molecule, called a ligand, in a cyclic or ring structure. An example of a chelate ring occurs in the ethylenediamine-cadmium complex:

The ethylenediamine ligand has two points of attachment to the cadmium ion, thus forming a ring; it is known as a didentate ligand. (Three ethylenediamine ligands can attach to the Cd2+ ion, each one forming a ring as depicted above.) Ligands that can attach to the same metal ion at two or more points are known as polydentate ligands. All polydentate ligands are chelating agents.

Chelates are more stable than nonchelated compounds of comparable composition, and the more extensive the chelation—that is, the larger the number of ring closures to a metal atom—the more stable the compound. This phenomenon is called the chelate effect; it is generally attributed to an increase in the thermodynamic quantity called entropy that accompanies chelation. The stability of a chelate is also related to the number of atoms in the chelate ring. In general, chelates containing five- or six-membered rings are more stable than chelates with four-, seven-, or eight-membered rings.

Explanation:

7 0
2 years ago
How are radio waves transmitted
kotegsom [21]
Attractive antennas that pull the waves tword it.
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