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For a solution containing 0.0060 M calcium nitrate and 0.057 M nitric acid, calculate the activity of the calcium ion.
When making 2-hexene, NaH is the only base that can cause the elimination process from 2-chlorohexane to make this product. Dan thinks that this reaction would be best run in Acenotrile,
Write a balanced equation to show the polymerisation of the molecule CF2CF2. Show two repeat units of the polymer.
scuba divers has a volume of 8.0 L and a pressure of 140 atm at 20 degrees C. What is the volume of air in the tank in liters at STP?
The mean velocities of HCl gas and NH3 gas at 25 degrees Celsius are 450m/s and 660m/s respectively. With these speeds in mind, briefly explain why so much time was required
Draw the electron-dot formula and predict the shape for each polyatomic ions: a) NO2^-; b) PO4^3-; c) ClO4^-; d) SF3^+.
Why is it preferable to use a metal ion buffer to achieve pM = 7, rather than just dissolving enough M to give a 10-7 M solution?
Calculate the intermolecular collision frequency and the mean free path in a sample of helium gas with a volume of 5.0 L at 27 degrees Celsius and 3.0 atm.
The melting point of the aspirin was found to be 110-115 celsius. Explain why the melting point was low and why the melting range was so wide
If the ph of Rainfall in Upstate New York is Found to be 4.0, and if the acidity is half due to Nitric acid (HNO3) and half due the two Hydrogen Ions released by Sulfuric acid
Calculate the expansion work done in kJ against a constant external pressure of 0.961 atm and at a constant temperature of 20°C. Assume that the initial volume of dry ice is negligible and that CO2 behaves like an ideal gas.
Ignoring any side reactions and assuming the reaction occurs completely, how large (in kg) an oxygen candle (KClO3) would be needed to supply 8 people with enough oxygen for 24 hours on a small submarine?
If the silver -silver chloride electrode is replaced with a saturated calomel electrode, what is the new cell voltage?
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