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AI-Si Eutectic, Calculate the mass fraction of the B phase, silicon, given a sample with 61.8 wt% alumimum at 576.99 degrees C.
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- AI-Si Eutectic, Calculate the mass fraction of the B phase, silicon, given a sample with 61.8 wt% aluminum at 576.99 degrees C.Write the balanced chemical equation for the Haber–Bosch process (i.e., the combination of nitrogen and hydrogen to form ammonia, NH3NH3 ). Phase symbols are optional.The volume of the mixture prepared by taking 1.158 moles and 0.842 moles of water and ethanol, respectively, at 25 ° C was measured as 68.16 cm ^ 3. Since the partial molar volume of water in the mixture is 16.98 cm3 / mol, find the partial molar volume of ethanol.
- 4. Consider the mass% hydrogen peroxide experiment Catalase 2H,02(aq) 2H20(1) + 02(g) 3.00mL of a hydrogen peroxide solution is used in this experiment and 36.00mL of oxygen gas is trapped in the apparatus. The air temperature is 23.0°C. What is the mass% of H202 in the solution?At which temperature is the vapor pressure of ethanol equal to 80. kPa?50.00 mL of a solution containing 0.15 M CH2 (CO2 H)2 and 0.020 M MnSO4 2. Calculate the mass of manganous sulfate monohydrate required (manganese sulfate is available only in the monohydrate form, MnSO4·H2O, which means that within every MnSO4 unit cell, there is one water molecule present; the mass of the water must therefore be included in the calculation). Answer watch your sig figs.
- In dry atmospheric air, the four most abundant components are N2, X = 0.808; 02, X = 0.1915; Ar, X %3D 9.34x10-5; and CO2, X = 4.066x10 4. Calculate the partial pressure of CO2, in torr, under standard %3D %3D atmospheric conditions.A student performed the experiment described in this module, using 7.00 mL of a 1.8% H,O2 solution with a density of 1.01 g mL-1. The water temperature was 20 ° C, and the barometric pressure in the laboratory was 30.02 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 45.1 mL of O2. (4) Calculate the water temperature, in Celsius, to kelvins.Draw and explain pressure-density phase diagram for CO2.
- What is w when 1.83 kg of H20(1), initially at 25.0 °C, is converted into water vapour at 185 °C against a constant external pressure of 1.00 atm? Assume that the vapour behaves ideally and that the density of liquid water is 1.00 g/ml (Remember to include a+or-sign as appropriate.) Enter your answer in acceptable SI units, accurate to 3. significant figures. Use an acceptable Sl symbol for units.The liquid-vapour equilibrium diagram of the binary water (H2O)-nitric acid (HNO3) under standard pressure is shown in the appendix. The mass fraction of HNO3 is plotted on the x-axis and the temperature on the y- axis. The analysis of a sample of the mixture obtained during the industrial preparation of nitric acid gives a total mass for this sample of 80 g and a mass of 60 g of water. a) Calculate the mass fraction of nitric acid in the mixture.One of the most recognizable corrosion reactions is the rusting of iron. Rust is caused by iron reacting with oxygen gas in the presence of water to create an oxide layer. Iron can form several different oxides, each having its own unique color. Red rust is caused by the formation of iron(III) oxide trihydrate. Fe,O, • 3 H,O Write the balanced reaction for the formation of Fe, O, • 3 H,O(s). Phases are optional. reaction: Fe + 6H,O + 30, Fe(OH)3 > Incorrect