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Compute for q for the reversible isothermal expansion at 300K of 5.0 mol of a perfect gas from 500 to 1500 cubic cm
Draw the structure of 18-crown-6, a compound that is commonly used to bind certain metal ions
A stock solution is prepared by adding 35 mL of 1.5 M NaNO2 to enough water to make 49 mL. How many moles of NO2- are in 30 mL of the stock solution
The corrosion of iron can be thought of as an electrochemical cell reaction. Calculate the voltage difference between two points of corroding iron differing only in their partial pressure of oxygen: 0.20atm of oxygen at one point and 0.0010atm of ..
A 4.78 L sample of H2O(g) reacts at a temperature of 375°C and a pressure of 692 mm Hg. How many grams of NH3 can be produced?
For the following precipitation reactions, calculate how many grams of the first reactant are necessary to completely react with 54.0 grams of the second reactant.
When a sample of phosphorus-32 was placed 1 cm from the detector, the intensity of its radiation was measured to be 491 counts per second. What would its activity be 2 cm from the detector
If 60.0 g of H3PO4 is dissolved in enough water to form 175 mL of solution, what is the molarity (M) of the solution?
Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose that a can contains a residual amount of gas at a pressure of 770 mmHg and a temperature of 30 C
In conducting a titration of 75.00mL of a certain triprotic acid with 0.0800 M NaOH the following information was recorded. a. the first equivalence point was observed at pH 3.96 after the addition of 12.4 mL of NaOH
What is the percent dissociation of HNO2 when 0.056 g of sodium nitrite is added to 115.0 mL of a 0.057 M HNO2 solution? Ka for HNO2 is 4.0 × 10-4.
Five metal rods (Copper, Iron, Nickel, Tin and Zinc), at room temperature, of equal mass are place in a 100 oC water bath. Which metal will reach 80 oC first.
Draw all of the Lewis structures of NO2+ which obey the octet rule and use this Lewis structure or these resonance structures to predict how many covalent bonds connect each oxygen atom in the real structure to the central N atom.
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