It's been a while since I've done this stuff... I'm pretty confident 3. is decibels. 2 could be perception (because perception is the pitch that a human hear designates to the frequency it receives). I'm unsure about the first one.
Given that the molarity of DCP equals 9.98x10-4M. And it
used to analyze a sample of extract from 2.50g of solid food. The titration
required 22.49mL of DCP. 87.00% of all the ascorbic acid in the food was
collected in the extract.
Amount of solid = 60 mg AA (100mg/87mg)(1g/1000mg)(1 mol
AA/176.124 gAA)(1mol DPC/1mol AA)( 1L DCP/9.98x10-4mol DPC)(2.50g solid/0.02249
L DPC) = 43.6 g solid.
Answer:
d. a brittle solid.
Explanation:
Hello!
In this case, since cesium fluoride is widely known as an ionic compound due to the large electronegativity difference, it is possible to discard a. due to its crystalline structure, b. because conducting solids are metals, c. because ionic compounds are not likely to be gases and e. because even when it is soluble in water, the problem is not referring to an aqueous solution; therefore, the answer is d. a brittle solid.
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