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#problem solving

2 public questions tagged with this topic.

Water and Mole Concept

How much water must be added to 10 mL of 0.5M HCl to dilute it tenfold?

90mL is obtained by applying the relevant formula or quantitative relationship to the given parameters. In Water and Mole Concept, numerical problem-solving requires understanding the mathematical relationships between biological variables. The calculation involves substituting the provided values into the appropriate equation and solving systematically. The other options (10mL, 100mL, and 990mL) result from common calculation errors such as using incorrect formulas, misidentifying variables, inverting ratios, or making arithmetic mistakes.

Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2

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Water and Mole Concept

What will be the molarity of 1 mg/mL protein solution if its molecular weight is 10 kDa?

0.1mM is the scientifically accurate answer to this question. Within the study of Water and Mole Concept, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of 0.1mM directly address what is being asked. Among the other options, 1mM, 10mM, and 100mM do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent common misconceptions about this topic.

Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 2

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