Examlex
Select the correct numerical value for the number of moles of S in two moles of H2SO4.
Systematic observation
An observational research method where data are collected in a structured and organized manner to study phenomena as they naturally occur.
Award-winning films
Movies that have received significant recognition or prizes from film festivals or industry awards.
Archival research
A method of research involving the examination of historical records and documents to gather data and test hypotheses.
Common theme
A recurring idea or motif throughout a piece of literature, conversation, or discussion.
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