Answered: In the phase diagram of quartz (SiO2),…

Science

Chemistry

In the phase diagram of quartz (SiO2), indicate what happens as the pressure increases.

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter5: Gases

Section: Chapter Questions

Problem 2CO

See similar textbooks

Similar questions

How does hydraulic fracturing differ from previously used techniques for the recovery of natural gas from the earth?
What possible uses exist for the natural gas liquids that are removed from natural gas during its processing?
A metal cylinder with a capacity of 6.0 L is filled with compressed propane (C3H8). The pressure and temperature of the cylinder when it was initially filled were 120 atm and 75 ◦C, respectively. The molar mass of carbon is 12 g·mol−1 and the molar mass of hydrogen is 1 g·mol−1. a) How many moles of propane are in the cylinder? b) What is the mass of the propane inside the cylinder? c) After some time, the cylinder and its contents cool to 25 ◦C. What is the pressure in the cylinder after it has cooled?
12. A sample of solid potassium chlorate was heated in a test tube and decomposed into potassium chloride and oxygen gas. The oxygen produced was collected by displacement of water at 22ºC at a total pressure of 754 torr. The volume of the gas collected was 0.650 L, and the vapor pressure of water at 22ºC is 21 torr. Calculate the partial pressure of O2 in the gas collected and the mass of potassium chlorate in the sample that was decomposed. (2.13 g)
Carbon has three allotropes: graphite, diamond, and a metallic form called solid III. Graphite is the stable form of 298 K and 1 atm pressure and at temperatures less than 1440 K. Increasing the pressure on the graphite turns graphite into diamond and then the diamond solid It causes it to transform into III. When applied to graphite at 298 K, graphite to diamond Calculate the pressure that causes the conversion. H298K, (graphite) - H298K, (graphite) = -1900J S298K, (graphite) = 5.73 J / K S298K, (diamond) = 2.43 J / K ,Density of graphite = 2.22 g / cm3 Density of diamond = 3.515 g / cm3
A 2.00 L reaction container at 25.0 °C contains CO2 (g) and O2 (g). The total pressure of the gases in the container was 656 torr and the mole fraction of CO2 is 0.245. A)Calculate the partial pressure of oxygen gas in the mixture. B)Calculate the mass of oxygen gas in the mixture (in g). C)Which gas will rise to the top of the container? Explain your answer.
Each sketch below shows a flask with some gas and a pool of mercury in it. The gas is at a pressure of 0.5 atm. A J-shaped tube is connected to the bottom of the flask, and the mercury can freely flow in or out of this tube. (You can assume that there is so much more mercury in the pool than can fit into the tube that even if the J-tube is completely filled, the level of mercury in the pool won't change.) Notice also that in the left sketch the J-tube is open at its other end, so that air from the atmosphere can freely flow. On the other hand, in the right sketch the J-tube is closed at its other end, and you should assume there is no gas between the mercury and the closed end of the tube. To answer this question, you must decide what the mercury level will be when the mercury finally stops flowing in or out of the tube. By moving the sliders back and forth, you'll see different levels of mercury in the J-tube. Select the final correct level for each sketch. A open tube closed tube -…
73. A 500.-mL sample of O2 gas at 24 °C was prepared by decomposing a 3% aqueous solution of hydrogen peroxide, H2 O2, in the presence of a small amount of manganese catalyst by the reaction 2H2 O2 (aq) → 2H2O (g) + The oxygen thus prepared was collected by displacement of water. The total pressure of gas collected was 755 mm Hg. What is the partial pressure of O2 in the mixture? How many moles of O2 are in the mixture? (The vapor pressure of water at 24 °C is 23 mm Hg.)
6. If excess carbon is present in a container that originally has 1:1 of CO and CO2 and no other gases, please explain the change of CO:CO2 ratio with increasing temperature.
Each sketch below shows a flask with some gas and a pool of mercury in it. The gas is at a pressure of 1 atm. A J-shaped tube is connected to the bottom of the flask, and the mercury can freely flow in or out of this tube. (You can assume that there is so much more mercury in the pool than can fit into the tube that even if the J-tube is completely filled, the level of mercury in the pool won't change.) Notice also that in the left sketch the J-tube is open at its other end, so that air from the atmosphere can freely flow. On the other hand, in the right sketch the J-tube is closed at its other end, and you should assume there is no gas between the mercury and the closed end of the tube. To answer this question, you must decide what the mercury level will be when the mercury finally stops flowing in or out of the tube. By moving the sliders back and forth, you'll see different levels of mercury in the J-tube. Select the final correct level for each sketch. 1 1 2 I Don't Know open tube…
A student experimentally determines the gas law constant, R, by reacting a small piece of magnesium with excess hydrochloric acid and then collecting the hydrogen gas over water in a eudiometer. Based on experimentally collected data, the student calculates R to equal L'atm 0.0832 mol·K L'atm Ideal gas law constant from literature: 0.08206 mol·K (a) Determine the percent error for the student's R-value. Percent error =|1.389 (b) For the statements below, identify the possible source(s) of error for this student's trial. The student uses the barometric pressure for the lab to calculate R. The student does not equilibrate the water levels within the eudiometer and the beaker at the end of the reaction. The water level in the eudiometer is 1-inch above the water level in the beaker. The student does not clean the zinc metal with sand paper. The student notices a large air bubble in the eudiometer after collecting the hydrogen gas, but does not dislodge it.
The decomposition of 30.354 g of potassium chlorate yields solid potassium chloride and oxygen gas that is collected at 27.05°C and a pressure of 1.075 atm. The value for the gas constant, R, is 0.08206 L•atm/mol•K. Write a balanced equation for the reaction. What volume of oxygen gas is collected in this decomposition reaction? What mass of potassium chlorate needs to decompose in order to produce 11.889 L of oxygen gas collected at the same temperature and pressure as the original experiment?