Chemistry, 22.07.2020 20:01 elricardo34
0.04578 g of an unknown metal was reacted with excess HCl(aq) in a test tube to
produce H2 gas. The H2 gas from the reaction was collected by the displacement of
water at 25.0°C and the barometric pressure of 755 torr. The volume of the H2 gas
under these conditions was measured to be 17.85 mL. The water vapor pressure at
25.0°C is 23.8 mmHg. The gas constant is 0.08205 atm-L/(mol-k). I atm = 760 torr =
760 mmHg.
Answer the following questions based on the above information:
1. What is the pressure of collected H2 gas?
2. How many moles of H2 gas were collected?
3. What is the molar mass of the unknown metal?
4. What is the identity of the unknown metal?
Write your answers below and label each answer clearly!
Answers: 3
Chemistry, 23.06.2019 09:20
La reaccion entre monoxido de nitrogeno (no) y oxigeno para formardioxido de nitrogeno (no2) es un paso determinante para la formacion del smog, la reaccion es la siguiente: 2no + o2 = 2no2 cual sera el numero de moles de no2 que se formaran por la reaccion completa de 8 moles de oxigeno con suficiente monoxido?
Answers: 1
Chemistry, 23.06.2019 18:00
Which action would reduce the activation energy of a chemical reaction? a. adding a catalyst to the reaction b. adding more reactants to the reaction vessel c. lowering the potential energy of the products d. lowering the potential energy of the reactants e. raising the temperature of the reaction
Answers: 1
0.04578 g of an unknown metal was reacted with excess HCl(aq) in a test tube to
produce H2 gas. The...
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