This lab includes a demonstration of the proper use of a burette system for titrations; including a detailed description, instructional video, and opportunity for students to collect data to ...

The fourth AP Top 25 poll of the 2025-26 season was released Monday, and despite pushes from Arizona and Michigan, Purdue remains the No. 1 team in the country. The Boilermakers have been at the top ...

Your support goes further this holiday season. When you buy an annual membership or give a one-time contribution, we’ll give a membership to someone who can’t afford access. It’s a simple way for you ...

AP Planner contains hundreds of thousands of future events spread across diverse categories, including political schedules, financial and economic announcements, trade and consumer conferences, award ...

AP is the authoritative source for information about elections in the United States. With a history of accuracy dating to our first vote count in 1848, AP is the go-to source for trustworthy and ...

Computational chemistry describes the use of computer modelling and simulation – including ab initio approaches based on quantum chemistry, and empirical approaches – to study the structures and ...

Theoretical chemistry seeks to provide theories and explanations for chemical observations whilst also posing questions to be answered by future experiments. Playing a key role in physical chemistry, ...

Various chemical analysis techniques can be used to help identify the chemicals present in reaction mixtures or give important information about the products of a chemical reaction. Chromatography is ...

Copyright 2025 The Associated Press. All Rights Reserved. Copyright 2025 The Associated Press. All Rights Reserved. Michigan celebrates as they defeat Gonzaga in an ...

Copyright 2025 The Associated Press. All Rights Reserved. Copyright 2025 The Associated Press. All Rights Reserved. The National Weather Service issued a Winter ...

Nov. 20, 2025 A nationwide analysis has uncovered how sprawling fossil fuel infrastructure sits surprisingly close to millions of American homes. The research shows that 46.6 million people live ...