One tablet contains 19.0 mg of thiamine. You weigh a tablet and determine that the mass is 0.845 g. ?
2020-09-24 12:09 am
One tablet contains 19.0 mg of thiamine. You weigh a tablet and determine that the mass is 0.845 g. What is the percentage (mass/mass)of thiamine in one tablet?
回答 (2)
2020-09-24 12:15 am
Percent (mass/mass) of thiamine in one tablet
= [(19.0 mg) / (0.845 g)] × 100%
= [(19.0 mg) / (0.845 × 1000 mg)] × 100%
= 2.25%
= [(19.0 mg) / (0.845 g)] × 100%
= [(19.0 mg) / (0.845 × 1000 mg)] × 100%
= 2.25%
2020-09-24 12:44 am
Keep multiplying by 1 until units are correct
1 = 1g/1000mg
1 = 100%
19.0mg/0.845g x 1g/1000mg x 100% = 2.28%
1 = 1g/1000mg
1 = 100%
19.0mg/0.845g x 1g/1000mg x 100% = 2.28%
收錄日期: 2021-04-24 08:05:04
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20200923160924AAj0Yaq