Property talk:P8465

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van der Waals constant a
constant used in the van der Waals equation in the pressure factor

Represents	van der Waals constant a (Q100256421)
Data type	Quantity
Domain	chemical compound (Q11173)
Allowed units	square litre bar per square mole (Q97496776)
Example	helium (Q560) → 0.0346 square litre bar per square mole water (Q283) → 5.536 square litre bar per square mole
See also	van der Waals constant b (P8466)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Minimum and maximum Items with highest numeric value Items with lowest numeric value Database reports/Constraint violations/P8465 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 2 Qualifier 2 100% of uses

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Citation needed: the property must have at least one reference (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8465#citation needed

Units: “square litre bar per square mole (Q97496776)”: value unit must be one of listed. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8465#Units

Item “van der Waals constant b (P8466)”: Items with this property should also have “van der Waals constant b (P8466)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P8465#Item P8466, hourly updated report, SPARQL

Type “chemical compound (Q11173)”: item must contain property “instance of (P31)” with classes “chemical compound (Q11173)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8465#Type Q11173, SPARQL