Write equation to represent dissociation of sodium sulfate
Write an equation to represent the dissociation of Na2SO4 into ions in an aqueous solution. 5.3 grams of Na2SO4 are dissolved and diluted up to 350 ml. What is the final concentration of Na in moles/liter?
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What is the pressure in atmospheres inside a container of gas connected to a mercury-filled open-end manometer when the level in the arm connected to the container is 28.0cm higher than the level in the arm open to the atmosphere
Calculate the work w when 0.7 litre of an ideal gas at an initial pressure of 4.2 atm is expanded or compressed isothermally to a final volume of 4.2 litres into a vacuum. Give your answers in J.
1) What volume (mL) of Hydrogen gas, saturated with water vapor, will be obtained from a 0.1138g sample of alloy which is 73.2 percent Al? (Pbar=754.3 torr, T=21.2deg C) Show your work. 2) What volume (in mL) will the dry hydrogen gas from questio
Question: A typical aspirin tablet contains 324mg aspirin(C9O4H8), a monoprotic acid Ka=2.8*10^-4. A monoprotic acid donates a single proton. If you dissolve two aspirin tablets in a 300 mL glass of water, what is the pH of the solution?
If a chemical reaction, A + B ---> C + D, is endothermic, what is the sign of ΔH for the reaction? Would the temperature recorded in the calorimeter well for such a reaction increase or decrease? Explain.
Examine the Lewis structure of methylene blue and explain why it is a cation instead of a neutral species. Where would the extra electron otherwise reside
Balance the following equation using half reactions. Write the half reactions in net ionic form if they occur in aqueous solutions a.
The concentrations of each were then determined as follows: [Fe^3+]= 6.8 x 10 ^-4 M, [SCN ^-]= 3.3 x 10 ^-4 M, [FeSCN ^2+]= 3.0 X 10 ^-5 M. Determine the equilibrium constant for this reaction.
In some industrial processes, sulfite is added to remove dissolved O2 to prevent corrosion of pipes. Write the balanced overall chemical reaction for reduction of dissolved O2 by sulfite (SO32-)
Calorie contents of nuts, A cashew nut was burned and determined to have an energy value of 3.5Cal/g. The amount of nut burned was 0.9933g. How many of these nuts would a 67kg person have to eat to ob
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