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A balloon originally had a volume of 0.439 L at 44°C and a pressure of 729 torr.To what temperature must the balloon be cooled to reduce its volume to 378 mL if the pressure remained constant?
Internal Validity
The degree to which a study or experiment accurately demonstrates a causal relationship between the variables being tested, without the influence of external factors.
External Validity
The extent to which the findings of a study can be generalized to other settings, populations, or time periods.
Double-masked
A study design where neither the participants nor the experimenters know who is receiving a particular treatment, used to prevent bias.
Epidemiological
Relating to the study of how diseases affect the health and illness of populations.
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