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- 89 A number of compounds containing the heavier noble gases, and especially xenon, have been prepared. One of these is xenon hexafluoride (XeF6), which can be prepared by heating a mixture of xenon and fluoride gases. XeF6 is a white crystalline solid at room temperature and melts at about 325 K. A mixture of 0.0600 g of Xe and 0.0304 g of F2 is sealed into a 100.0-mL bulb. (The bulb is heated, and the reaction goes to completion. Then the sealed bulb is cooled back to 20.0°C. What will be the final pressure in the bulb, expressed in torr?Given that the density of argon is 1.78 g/L under standard conditions of temperature and pressure, how many argon atoms are present in a room with dimensions 4.0 m 5.0 m 2.4 m that is filled with pure argon under these conditions of temperature and pressure?4) ? ? H,0 HO,
- 6) o.025 MOL OF AN IONIC COMPOUND AlaSp CONTAINS o.05 MOL CATIONS AND 4.5×1022 anions. Given: molar mass ( Al=27 S=32, Fe=56 , 0=16 , NA =6 ×1023 atom.mol-1) • 4. Determine the molar mass of AlaSp if o.025 mol weighs 3-759. 5. Deduce the formula unit of AlaSp- 6. Calculate the mass of ferric sulfite that contains the same number of anions in Al,Sp.||| A ALEKS-Katelyn Pearson... 1 Apromatincat Rom Fecr] ATOMS, IONS AND MOLECULES Predicting the formula of ionic compounds with common... Write the empirical formula for at least four ionic compounds that could be formed from the following ions: OH, Fe²+, 103, NH b Answered. The following X O GWrite the empirical formulas for (a) glucose, a substance also known as either blood sugar or dextrose—molecular formulaC6H12O6; (b) nitrous oxide, a substance used as an anesthetic and commonly called laughing gas—molecular formula N2O.
- Many solids used in the lab come with different variations for different purposes. For example, EDTA has a formula of C1oH16N2O8 (292.2438 g/mol) but to improve the solubility of EDTA in water, the one we used in the lab is EDTA disodium salt dihydrate "C10H14N2N22O8 •2H20 " (Molar mass: 372.24 g/mol)where there are two sodium atom and two water molecule attached to the EDTA, therefore, when calculating the molar mass of EDTA, we need to add the mass of two sodium atoms and two water molecule mass. Calculate the molar mass of Iron(III) chloride hexahydrate: FeCl3• 6H20. O 162.29 g/mol 180.29 g/mol 270.29 g/mol O 17527 g/molGive the complete reactants for the given products of chemical reactionsThe recommended daily allowance of niacin (vitamin B3B3) is 16 mgmg per day for men. The molecular formula for niacin is C6H5NO2C6H5NO2. Calculate the number of molecules of niacin in 16 mgmg .
- An air conditioner compressor contains pure CClF3, also known as the refrigerant R-13. CClF3 has a density of 1.53x10^-3 g/L when unpressurized. If the volume of the unpressurized compressor is 0.500 L, how many molecules of CClF3 are in the compressor? a) 4.41x10^18 b) 8.82x10^18 c) 4.60x10^20 d) 1.04x10^2A sample of nickel silver contains 18.0% nickel by mass. What mass of nickel silver must be melted down to obtain 21.0 kg of nickel if 70% of the nickel present in the ore can be extracted after melting?Calculate the percentage of nitrogen in C10H14N2.
