What phrase can help recall the order of operations in chemistry?

• A. Refer Every Student to Anne Stanford
• B. Please Excuse My Dear Aunt Sally
• C. Order Matters in Chemistry
• D. Calculate Always Before Solving

Answer: (B)

The phrase that assists in recalling the order of operations in chemistry is "Please Excuse My Dear Aunt Sally." This mnemonic is widely recognized for summarizing the sequence of mathematical operations: parentheses, exponents, multiplication and division (processed from left to right), and addition and subtraction (also processed from left to right).

While the order of operations in chemistry might often involve employing these mathematical principles, this mnemonic is effective because it is well-known and can easily be remembered, making it a useful tool when working through chemical equations and calculations requiring precise order.

Other phrases suggested may relate to various subjects but do not align as closely with the established order of operations within a chemical context. They might be applicable in different scenarios or fields, but for the specific inquiry regarding chemistry, the popularly used mnemonic remains the most relevant and helpful.