Philadelphia firefighters gather at the entrance to Philadelphia Energy Solutions Refinery, while a large flare burns off fuel to prevent it from feeding the massive fire at the refinery. Workers at ...

A well-established technique, acid-base titration is an analytical method used to determine the concentration of an unknown acid or base. In practice, it involves adding a solution of known strength ...

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 ...

During the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, several new viral variants have emerged, leading to the virus becoming more contagious. However, efficient immune ...

In plasma specimens from persons who had received two doses of an mRNA vaccine (BNT162b2 [Pfizer–BioNTech] or mRNA-1273 [Moderna]) 1.3 months before sampling, the NT 50 values were 187±24 times lower ...

Researchers have been able to directly visualize the neutral products of the mutual neutralization of hydronium and hydroxide, and report three different product channels: two channels were attributed ...

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