Chemistry, 07.10.2019 01:10 gabrielrivasgom
2. a fertilizer contains ammonium sulphate and potassium sulphate. a sample of 1.455g of the fertilizer was warmed with 25.0cm3 0.200mol dm-3 sodium hydroxide solution giving off ammonia gas. the remaining naoh that was not used required 28.7cm3 of 0.100mol dm-3 hydroxide acid for neutralization. calculate the percentage by mass of ammonium sulphate in the sample.
Answers: 3
Chemistry, 22.06.2019 07:30
Given that 1 mi = 1760 yd, determine what conver- sion factor is appropriate to convert 1849 yd to miles; to convert 2.781 mi to yards.
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Chemistry, 22.06.2019 22:00
The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?
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Chemistry, 22.06.2019 23:30
Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.
Answers: 3
2. a fertilizer contains ammonium sulphate and potassium sulphate. a sample of 1.455g of the fertili...
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