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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Whelan Whelan
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9 years ago
Amphetamines in urine can be confirmed by mass spectroscopy at a concentration of 500 ng/mL. Assuming a urine density of 1.025 g/mL, what is this concentration in parts per million?
Textbook 
Introductory Chemistry Essentials

Introductory Chemistry Essentials


Edition: 5th
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hbutler2hbutler2
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9 years ago
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Whelan Author
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9 years ago
Thank you, thank you, thank you!
ezsancheezy
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Yesterday
This helped my grade so much Perfect
Shassta22
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2 hours ago
Correct Slight Smile TY
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