Chemistry, 06.05.2020 06:10 gavincoscarat760
A student obtained the following data in this experiment. Fill in the blanks in the data and make the indicated calculations
Mass of gelatin capsule 0.1284 g Ambient temperature, t 22°C
Mass of capsule plus alloy sample 0.3432 g Ambient temperature, T K
Mass of alloy sample, m 0.2148 g Barometric pressure 745 mm Hg Mass of empty beaker 144.5 g Vapor pressure of H2O at t mm Hg
Mass of beaker plus displaced water 368.9 g Pressure of dry H2, 745 mm Hg Pressure of dry H2 atm
Mass of displaced water 224.4 g Volume of displaced water (density = 1.00 g/mL) mL Volume, V, of H2 = Volume of displaced water mL; liters
Find the number of moles of H2 evolved, (V in liters, P in atm, T in K, R = 0.0821 literatm/ mole K). moles H2
Find , the number of moles of H2 per gram of sample.
Answers: 3
Chemistry, 21.06.2019 15:50
In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction. express your answer as a chemical equation. identify all of the phases in your answer.
Answers: 3
Chemistry, 21.06.2019 18:30
How much energy moves onto the next level, in an energy pyramid
Answers: 1
Chemistry, 22.06.2019 02:50
The conventional equilibrium constant expression (kc) for the system below is: 2icl(s) ⇄ i2(s) + cl2(g) [cl2] ([i2] + [cl2])/2[icl] [i2][cl2]/[icl]2 none of the listed answers are correct [i2][cl2]/2[icl]
Answers: 2
A student obtained the following data in this experiment. Fill in the blanks in the data and make th...
Mathematics, 22.01.2020 17:31
Mathematics, 22.01.2020 17:31
Chemistry, 22.01.2020 17:31
History, 22.01.2020 17:31
History, 22.01.2020 17:31
Mathematics, 22.01.2020 17:31
Computers and Technology, 22.01.2020 17:31