Two molecules of ethane experience what type of attractive forces? 
Definitions:
Research Hypotheses
Statements made by researchers that predict a relationship between variables, to be tested by scientific research.
Samples and Populations
Concepts in statistics where a sample represents a subset of a larger group (population) from which it is drawn and is used to infer properties about the population.
Dependent Variable
The variable in an experiment or study that is expected to change in response to manipulations of the independent variable, representing the effect or outcome.
Nominal
Relating to variables that consist of categories or labels with no inherent order or ranking among them.
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