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- You have two distinct gaseous compounds made from element X and element Y. The mass percents are as follows: Compound I: 30.43% X, 69.57% Y Compound II: 63.64% X, 36.36% Y In their natural standard states, element X and element Y exist as gases. (Monatomic? Diatomic? Triatomic? That is for you to determine.) When you react gas X with gas Y to make the products, you get the following data (all at the same pressure and temperature): 1. volume gas X + 2 volumes gas Y2 volumes compound I 2. volumes gas X + 1 volume gas Y2 volumes compound II Assume the simplest possible formulas for reactants and products in the chemical equations above. Then, determine the relative atomic masses of element X and element Y.You have two distinct gaseous compounds made from element X and element Y. The mass percents are as follows: Compound I: 30.43% X, 69.57% Y Compound II: 63.64% X, 36.36% Y In their natural standard states, element X and element Y exist as gases. (Monatomic? Diatomic? Triatomic? That is for you to determine.) When you react gas X with gas Y to make the products, you get the following data (all at the same pressure and temperature): 1 volume gas X + 2 volumes gas Y 2 volumes compound I 2 volumes gas X + 1 volume gas Y 2 volumes compound II Assume the simplest possible formulas for reactants and products in the chemical equations above. Then, determine the relative atomic masses of element X and element Y.Marie Curie was born in Poland but studied and carried out her research in Paris. In 1903, she shared the Nobel Prize in Physics with H. Becquerel and her husband Pierre for their discovery of radioactivity. (In 1911 she received the Nobel Prize in Chemistry for the discovery of two new chemical elements, radium and polonium, the latter named for her homeland, Poland.) They and others observed that a radioactive substance could emit three types of radiation: alpha (), beta (), and gamma (). If the radiation from a radioactive source is passed between electrically charged plates, some particles are attached to the positive plate, some to the negative plate, and others feel no attraction. Which particles are positively charged, which are negatively charged, and which have no charge? Of the two charged particles, which has the most mass? Radioactivity. Alpha (), beta I(), and gamma () rays from a radioactive element are separated by passing them between electrically charged plates.
- 1.Methane was combusted at 100.0 degrees C and 1.00 atm. The following data table was used to collect and record data: Item Mass Before (g) Mass After (g) Volume (L) Methane 774 x x Oxygen XS x x Carbon dioxide x ? ? Water Vapor x ? ? CH4 + O2 ---> How many grams of water vapor is formed as a result of the reaction? How many liters of carbon dioxide is formed? ________g H2O _________L CO2 Blank 1: Blank 2:Mass of the gelatin capsule was: 0.1134 g Mass of the capsule and the allow sample was: 0.3218 g Ambient Temperature was: 23°C Mass of empty beaker: 154.3 g Mass of beaker with water: 401.6 g Vapor pressure of water for this data: 21.1 mmHg Atmospheric Pressure: 732 mmHg Assume density of water to be 1.0000 g/mL What is the volume of the displaced water in Liters? Using PH2V= nH2RT, nH2=PH2V/RT how many moles of H2 were evolved? Determine the number of moles of H2 per gram of sample. Determine the %Al using NH2= (%AL/100 * 0.0556) + (100-%AL/100 * 0.0153)Mass of the gelatin capsule was: 0.1134 g Mass of the capsule and the allow sample was: 0.3218 g Ambient Temperature was: 23°C Mass of empty beaker: 154.3 g Mass of beaker with water: 401.6 g Vapor pressure of water for this data: 21.1 mmHg Atmospheric Pressure: 732 mmHg Assume density of water to be 1.0000 g/mL What is the ambient temperature in Kelvin? What is the mass of the alloy sample? What is the mass of the displaced water? Using equation Ph2 = Patm - VP H2O what is the pressure of the dry H2 in atm?
- Methane was combusted at 100.0 degrees C and 1.00 atm. The following data table was used to collect and record data: Item Mass Before (g) Mass After (g) Volume (L) Methane 774 x x Oxygen XS x x Carbon dioxide x ? ? Water Vapor x ? ? CH4 + O2 ---> How many grams of water vapor is formed as a result of the reaction? How many liters of carbon dioxide is formed?Methane was combusted at 100.0 degrees C and 1.00 atm. The following data table was used to collect and record data: Item Mass Before (g) Mass After (g) Volume (L) Methane 774 x x Oxygen XS x x Carbon dioxide x ? ? Water Vapor x ? ? CH4 + O2 ---> How many grams of water vapor is formed as a result of the reaction? How many liters of carbon dioxide is formed? _________ g H2O __________ L CO2 Blank 1: Blank 2:"Nitric acid reacts with S to give H2SO4 and nitrogen monoxide. 30 ml of acid at 25% by mass and a density of 1.08 g/ml with 5 g of S. a) Adjust the reaction. b) Calculate limiting reactant and its excess. c) Calculate mass of unreacted reactant. d) Determine volume of NO at 600 mm Hg and 20°C. 20% yield"THE EQUATION THEY PROVIDE IS:2HNO3 + S → H2SO4 +2NOYOU DONT NEED TO ADD H20 IN THE EQUATION
- Air has an average molar mass of 29.0 g/mol. The density of air at 0.99atm and 30.0oC is:(Ignore significant figures for this problem.)Select one:a. 29.0 g/Lb. 39.8g/mLc. 1.15g/Ld. 1.37g/mLe. 11.7g/LDefine the term Increasing Density and Stability?1.calculate the velocity (in m/s ) of a 2.33-g object that has Ek-46.2 J.