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Balance the following equations. (Use the lowest possible whole-number coefficients. These may be zero.) (a) ClO3-aq) + As(s) Æ HClO(aq) + H3AsO3(aq) ClO3- + As + H+ + H2O HClO + H3AsO3 + H+ + H2O (b) Fe(CN)63-(aq) + N2H5+(aq) Fe(CN)64-(aq) + N2(g) Fe(CN)63- + N2H5+ + H+ + H2O Fe(CN)64- + N2 + H+ + H2O (c) Cl2O7(aq) + C2O42-(aq) Cl-(aq) + CO2(g) Cl2O7 + C2O42- + OH- + H2O Cl- + CO2 + OH- + H2O (d) Cl2O7(aq) + H2O2(aq) ClO2-(aq) + O2(g) Cl2O7 + H2O2 + OH- + H2O ClO2- + O2 + OH- + H2O
How long does it take to electroplate 0.5 mm of gold on an object with a surface area of 31 cm2 from an Au3+(aq) solution with a 8 A current. Recall the density of gold is 19.3 g/cm3.
The single proton that forms the nucleus of the hydrogen atom has a radius of approximately 1.0x10^- 13 cm. The hydrogen atom itself has a radius of approximately 52.9 pm.What fraction of the space within the atom is occupied by the nucleus?
The temperature of the water rose from 25.00 degree C to 28.21 degree C. Assuming all the heat from the metal was transferred to the water, calculate the specific heat of the metal.
For a particular process that is carried out at constant pressure, q= 130 kJ and w= -20 kJ. Therefore,
the osmotic pressure of this solution was 0.00222 atm at 25 C. calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte.
The water-gas shift reaction is important in hydrogen gas production. The balanced reaction shown below has a Kp of 9.48 at 700K. If 1.5 atm of H20 are placed in a container and heated to 700K, how much hydrogen gas
What is the equilibrium constant for the following reaction CO(g) + 2 H2(g) ↔ CH3OH(l); [CO] = 0.788 M and [H2] = 0.872 M?
How many grams of sodium azide are needed to provide sufficient nitrogen gas to fill a 35.0x35.0x25.0 cm bag to a pressure of 1.20 atm at 26 degress C.
What is the balanced chemical equation for the reaction used to calculate Delta H f of SrCO3(s) ? If fractional coefficients are required, enter them as a fraction
A 10.9-g mixture of nitrogen and carbon dioxide is found to occupy a volume of 8.88 L when measured at 641.9 mmHg and 28.5oC. What is the mole fraction of nitrogen in this mixture?
Identify the strongest attractive forces between molecules of each of the following: a) O2; b) SiH4; c) CH3Cl; d) H2O2; e) Ne
A chemist is commissioned to produce 50,000 liters of 0.550 M aqueous phosphoric acid. The chemist can purchase solid, 98.64% pure, phosphoric acid to dissolve in water. How many grams of this reagent are required?
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