Chemistry, 16.10.2019 21:30 Epicgible8136
2. the empirical formula of a molecule is ch2o. in an experiment, the molar mass of the molecule was determined to be 360.3 g/mol. use this information to determine the molecular formula of the molecule. show your work.
3. sometimes you are given a measured amount of two or more reactants and asked how much product can be formed. explain what steps you would follow to solve this type of problem.
4. this question has two parts:
a. what is percent yield? explain what it is and how it is calculated.
b. in a laboratory experiment, when 35.0 g mg reacted in excess o2, the percent yield of mgo was 90.0%. what was the actual yield of that experiment?
Answers: 2
Chemistry, 23.06.2019 06:00
When hydrogen peroxide (h2o2) is added to potassium iodide (ki) solution, the hydrogen peroxide decomposes into water (h2o) and oxygen (o2). the chemical equation for the decomposition reaction is: 2h2o2—> 2h2o + o2. what is the role of the potassium iodide in this reaction? a. reactant. b. product. c. precipitate. d. catalyst.
Answers: 1
Chemistry, 23.06.2019 08:40
A20 liter cylinder of helium at a pressure of 150 atm and a temperature of 27°c is used to fill a balloon at 1.00 atm and 37°c. what is the volume of the balloon? a. 0.14 liters b. 3000 liters c. 2900 liters d. 2400 liters e. 3100 liters
Answers: 1
Chemistry, 23.06.2019 09:30
How many significant figures are in the following numbers ? a. 0.0002030 b. 2.000 c. 2.008900 d. 145.00
Answers: 2
2. the empirical formula of a molecule is ch2o. in an experiment, the molar mass of the molecule was...
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