Chemistry, 27.04.2021 15:50 shadowmatz
A student thermally decomposed a 0.150 gram sample of impure potassium chlorate. Manganese dioxide was used as a catalyst in the reaction. The student collected 43.60 mL of oxygen gas over water in a eudiometer. Potassium chloride was the other product of the reaction. The temperature and pressure at collection time were 20.00 oC and 762.10 mm Hg respectively. The water level in the eudiometer was 4.22 cm below the outside water level in the beaker.
1) What is the corrected pressure of the dry oxygen gas?
2) What is the volume in mL, of the dry oxygen gas at STP conditions?
3) How many molecules of oxygen were collected?
4) what is the percent purity of the original potassium chlorate sample?
Answers: 2
Chemistry, 21.06.2019 21:00, alexmarche4675
Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.
Answers: 2
Chemistry, 22.06.2019 00:30, jamesnaquan132
What is the most stable monatomic ion formed from nitrogen
Answers: 2
Chemistry, 22.06.2019 04:00, lucasrandall
Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?
Answers: 2
A student thermally decomposed a 0.150 gram sample of impure potassium chlorate. Manganese dioxide w...
Mathematics, 15.05.2021 14:00
Mathematics, 15.05.2021 14:00
Mathematics, 15.05.2021 14:00
Mathematics, 15.05.2021 14:00
Mathematics, 15.05.2021 14:00