Answer:
D. length × width
Explanation:
eg. 30 cm(length) × 20cm(width) = 600cm²
Answer:
A. copper is highly water soluble. It will turn into 5 different hydrates as it absorbs more and more water.
b. Glycerol is easily soluble in water, due to the ability of the polyol groups to form hydrogen bonds with water molecules
c. octane is considered to be non-polar, it will not be soluble in water, since water is a polar solvent. This will happen because octane (hydrocarbons in general) contains neither ionic groups, nor polar functional groups that can interact with water molecules.
d. Nitric acid decomposes into water, nitrogen dioxide, and oxygen, forming a brownish yellow solution.
e. Barium carbonate is a white powder. It is insoluble in water and soluble in most acids
Explanation:
<span>(1) convert body mass in lb to kg
211 lb = (211 lb)*(1 kg/2.2046 lb) = 95.71 kg
(2) calculate the amount of caffeine required for a person of that mass at the LD50
(150 mg/kg)*(95.71 kg) = 14356 mg
(3) convert % (w/w) to % (w/v)
0.61% (w/w) = 0.61 g/100 g = (0.61 g)/((100 g)/(1.00 g/mL)) = 0.61 g/100 mL
(4) calculate the volume that contains the amount of caffeine calculated
14356 mg = 14.356 g = (14.356 g)/(0.61 g/100 mL) = 2353 mL</span>
