How many milligrams of sodium thiosulfate (m.w. = 158) are represented by 0.25 mmol? (answer must be numeric; no units or commas
; include a leading zero when answer is less than 1; round final answer to the nearest tenth.)?
1 answer:
To calculate for mass, simply multiply molar weight (MW)
and number of mols. The molar weight (MW) is in units of mg / mmol. Therefore
the mass is:
mass = (158 mg / mmol) (0.25 mmol)
mass = 39.5 mg
Answer:
39.5
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