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A sample of 0.368 mol of a metal M reacts completely with excess fluorine to form 28.7 g of MF2. what element is represented by the symbol M?
Consider two jars. One jar contains 100 blue spheres, and the other jar contains 25 each of red, blue, green, and yellow colors mixed together. If you were to remove 30 spheres from the jar containing the mixture (assume you get a representative d..
AgCl has a 78.1% ionic character and a diplole moment of 11.5D. what is the distance between the Ag and Cl atoms?
Explain how does unique physical and chemical properties of water contribute to significance of water for life on Earth to survive.
Calculate the molarity of 736 mL of a solution that contains 153 g of sucrose C12H22O11.
At what temperature will air (MW=29) have the same density as helium at 300 K, both gases at the same pressure.
Calculate the expansion work done against a constant external pressure of 0.999 atm and at a constant temperature of 24°C. Assume that the initial volume of dry ice is negligible and that CO2 behaves like an ideal gas.
Typically an adult will inhale 2.1 L of air per breath. What mass of ozone is taken into the lungs per breath by an adult breathing air containing 1.57 x 10^-4 micro(ug) grams of ozone per cm^3 of air?
what would be the chemical equation to this problem? In an investigation of the reaction between copper(II) ions, Cu2+, and hydrazine, N2H4, in alkaline conditions the following observations were made: 25 mL of a solution containing 25 g/L CuSO4.5..
Drinking water in the USA cannot exceed 0.5 ppm mercury. What mass of mercury is present in 1.3 L of water at this concentration. What is the molar concentration of mercury
what is the mole fraction of ethanol in an aqueous solution that is 46 percent ethanol by mass?
What is the rate law for the reaction? Please show step by step solution.
Calculate the work done in joules by the reaction when 0.21 g of Na reacts with water to form hydrogen gas at 1°C and 3.0 atm in an open container.
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