A 3.50-gram sample of Streptomycin powder was tested for its water content. If the water equivalence factor of the KF reagent was 4.6, what is the percentage water content of the sample if 9.2 ml of the KF reagent was used?
Atomic weights are not provided, but please use rounded-off values to the nearest whole number.
(examples: 24.305, use "24"; 107.8682, use "108"; 1.00784, use "1"; 15.999, use "16")
Add trailing zeros to complete your answer to the 3rd decimal place, if necessary.
(examples: if your answer is "62.7", write it as 62.700;
if your answer is "37.12", write it as 37.120
if your answer is "123", write it as 123.000)
1. A 3.50-gram sample of Streptomycin powder was tested for its water content. If the water equivalence factor of the KF reagent was 4.6, what is the percentage water content of the sample if 9.2 ml of the KF reagent was used?
2. An analyst accurately weighed 5.351 grams of sample for ash-insoluble content using the dry method. The weight of the crucible containing the ash was 40.722 grams. If the sample was said to have 2.150% of insoluble ash, what is the weight of the tared crucible?
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