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Three compounds formed from the elements iron(Fe) and oxygen(O) are decomposed and the weight ratio of iron to oxygen determined. The results are: Compound 1 = 3.49 g Fe/g O; Compound 2 = 2.62 g Fe/g O; Compound 3 = 2.33 g Fe/g O. Compound 1 has the formula FeO, what are the formulas of the other two compounds? Remember a formula (actually an empirical formula) is the smallest whole number ratio of atoms of each element in the compound.
Saturated acetone vapor enters a heat exchanger at a rate of 8.40 L/s and 1 atm, and emerges from the heat exchanger as a saturated liquid at the same pressure. Water at 1 atm enters the heat exchanger at 10.5 C and at a rate of 9.48 mol/s
What is the pressure (in millimeters of mercury) inside a container of a gas connected to an open-end manometer when the level in the arm connected to the container is 223.4 mm in height
Question- What is the mechanism for hydroquinone dimethyether + 2) 2-methyl-2-propanol in h2so4? To give 1,4-di-tert-butyl-2,5-dimethoxybenzene
A 31 L tank contains a gas under a pressure of 617 atm. What volume would the gas occupy at the same temperature at 900 torr of pressure? Answer in units of L.
consider the system introduced in example 3.b.2 p. 97 in which a 2 l sealed jar half filled with water and half filled
Calculate the freezing point of a solution that contains 8.0 g of sucrose (C12H22O11) in 100. g of H2O. Kf for H2O = 1.86°C/m.
If the total volume of the jewelry is the sum of the volumes of the gold and silver that it contains, calculate the percentage of gold (by mass) in the jewelry
What is the vapor pressure of SiCl4 (in mm Hg) at 23.5 C? The vapor pressure of SiCl4 is 100 mm Hg at 5.4 C and Delta H
Question- Sketch the 2s, 3p, and the 3d orbitals using 3- dimensional axes for each plot (you will have total of 9 plots for the orbitals) label each plot with the specific orbital orientation,
Determine the molecular formulas for compounds having the following empirical formula and molar mass:
Another beverage that uses FD&C Yellow #5 (M = 534.36 g/mol) for its distinctive color is Gatorade Lemon-Lime. The literature value of the molar absorptivity of FD&C Yellow #5 at 430 nm is E = 2.43 x 10^4 M^-1 cm^-1.
A 25.0-mL sample of potassium chloride solution was found to have a mass of 25.115g. When the solution was heated to dryness, the mass of the solute residue was 0.252g. Calculate the (a)mass/mass % concentration and (b) molar concentration.
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