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Fed [463]
3 years ago
8

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.)?
Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
5 0

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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