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what do you think the small piece of filter paper accomplishes when placed on the copper Cu
400 M formic acid (HCOOH) solution freezes at -0.758 degrees C. Calculate the Ka of the acid at that temperature. (hint: assume that molarity is equal to molality. Carry out your calculations to three sig figs and round off to two for Ka).
with wet beriberi, peripheral vessels dilate and cardiac muscle looses its contractility. also, alpha-ketoglutarate is found in high concentrations. this is thought to be caused by
If 30mL of 6.8M H2SO4 was spilled , what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid.
heat of solution of lithium carbonate is -3.06 kJ/mol solute in 200 moles H2O. What effect would you expect increased temperature to have on the concentration of Li2CO3? Explain
What are the products of a single displacement reaction involving hydrochloric acid and magnesium
calculate the expected pH value of the buffer system 5mL .1M CH3COOH + 5mL .1M CH3COO-Na+ using the henderson-hasselbalch equation using the pKa values: carbonic acid= 6.37 and acetic acid=4.75
A balloon at 200.ºC is inflated with hydrogen gas to a volume of 100. mL. It is then further inflated to a volume of 300. mL with oxygen gas. If the reaction between hydrogen and oxygen proceeds 100%, what is the final volume of the balloon
Write the net ionic equations and calculate the enthalpy of neutralization for the net ionic equations:
Calculate the volume in liters of a 0.024 micro M copper (II) sulfate solution that contains 11.0 mol of copper (II) sulfate
a cylinder measuring 5.7 cm wide and 6.8 cm high is filled with gas. The piston is pushed down with a steady force measured to be 11 N.
Three 10.00mL samples of juice were titrated with DCP that had a standardized concentration of 1.01x10-3M. The three titrations took an average of 13.82mL of DCP. Calculate the mass (in mg) in 50.00mL of juice. (MM Ascorbic Acid = 176.124 g/mol)
Determine the initial quality and temperature of the fluid mixture prior to heating. [quality x1 = 0.182, T1 = 113.3°C] b) Determine the final volume of the steam after heating. [0.546 m3 (546 liters)] Note: 1000 liters - 1 m3
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