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The 2014 AP Chemistry exam was the first administration of a redesigned test as a result of a redesigning of the AP Chemistry course. The exam format is now different from the previous years, with 60 multiple choice questions (now with only four answer choices per question), 3 long free response questions, and 4 short free response questions.
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Ammonium perchlorate ("AP") is an inorganic compound with the formula NH 4 ClO 4.It is a colorless or white solid that is soluble in water. It is a powerful oxidizer.Combined with a fuel, it can be used as a rocket propellant called ammonium perchlorate composite propellant.
A certificate of analysis (COA) is a formal laboratory-prepared document that details the results of (and sometimes the specifications and analytical methods for) one or more laboratory analyses, signed—manually or electronically—by an authorized representative of the entity conducting the analyses. This document gives assurances to the ...
Jennifer Garner and her family are big fans of the holiday season!. In an exclusive conversation with PEOPLE, the actress, 52, opens up about how she and her three children — Violet, 18 ...
President-elect Donald Trump could be in a position to select the government’s top ethics czar when he assumes office in January – after a key ally in the Senate blocked President Joe Biden ...
Chemistry stencils that used to be used for drawing equipment in lab notebooks. A laboratory notebook ( colloq. lab notebook or lab book ) is a primary record of research . Researchers use a lab notebook to document their hypotheses , experiments and initial analysis or interpretation of these experiments.
Israel and Lebanon have accepted a proposal to end the 13-month border conflict that spiraled into an all-out war with Hezbollah. Here are the details about the Israel-Hezbollah ceasefire deal