Leaf Tincture
Chemistry questions–If you could help I would REALLY appreciate it!?
A 25.0 mL sample of the Great Salt Lake leaves 3.14 g of solid behind after evaporation. What is the % concentration of the sample?
A. 12.6% (w/w)
B. 1.26 % (w/w)
C. 12.6% (w/v)
D. 1.26% (w/v)
(w/w = weight/weight)
(w/v = weight/volume)
How much iodine is needed to make 300 mL of a 2% (w/v) tincture of iodine solution?
A. 2 g
B. 4 g
C. 6 g
D. 2 mL
E. 6mL
Thanks for your help!
1 – only possible answer is w/v: 3.14/25 X 100 = 12.56%(12.6)w/v
#2 – 6 g – 6/300 X 100 = 2% w/v
11: Making a tincture
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HAWTHORN LEAF & FLOWER Tincture Extract ~ 4sizes $18.95 |
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CILANTRO LEAF Tincture Extract ~ Multiple Sizes $18.95 |
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PLANTAIN LEAF Tincture Extract ~ Multiple Size ORGANIC $18.95 |
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ALFALFA LEAF Tincture Extract ~ Detox~ 4sizes $18.95 |
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YARROW LEAF & FLOWER Tincture Extract ~ 4 sizes $18.95 |
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OLIVE LEAF Tincture Extract ~Antibacterial Antiviral ~ $18.95 |
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NETTLE LEAF Tincture Extract ~ Multiple Sizes $18.95 |
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GINKGO LEAF Tincture Extract ~ Multiple Size Bottles $18.95 |
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DAMIANA LEAF Tincture Extract ~Organic Aphrodesiac $18.95 |
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BILBERRY LEAF Tincture Extract ~diabetes aid 4 sizes $18.95 |
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April 30th, 2008 in
Homeopathic & Natural Remedies | tags: bilberry, black leaf tincture, cats, health, herbs, neem leaf tincture, nettle leaf tincture, raspberry leaf tincture, red raspberry leaf tincture, tea