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Find the percent by mass of oxygen in heptanoic acid, C6H13CO2H.
Question- How many grams of solid NaCN have to be added to 1.4 L of water to dissolve 0.16 mol of Fe(OH)3 in the form of Fe(CN)63. (For simplicity, ignore the reaction of CN? ion with water.)
On heating 5.03 g of hydrated barium chloride, 4.23 g is left behind. What is the name of this hydrate?
A gas is initially at 1.2 atm, 15.0 L, and O°C. What is the final pressure when the same amount of gas is heated to 10°C and the volume changed to 16.0 L
Problem- Suppose you have 135mL of a buffer that is 0.30M in both propanoic acid (C2H3COOH) and is conjugate base (C2H3COO). Calculate the maximum volume of 0.30M HCl that can be added to the buffer before its buffer capacity is lost.
If the same volume of the buffer was 0.330 M in HF and 0.330 M in NaF, what mass of NaOH could be handled before the pH rises above 4.00?
A gaseous mixture containing 0.200 mol fraction of carbon tetrachloride (CCl4) and 0.800 mol fraction of dry air is initially at 68.0°C and 1169 mmHg. 1- If this mixture is cooled at a constant pressure, at what temperature does the CCl4 first sta..
Ethane gas, C2H6, burns in oxygen to form carbon dioxide gas and gaseous water. At constant 1.60 kJ of heat is evolved when 79.442 grams of ethane is burned.
what is the pressure in a 22.7l cylinder filled with 10.8 g of oxygen gas at a temperature of 343
A drug with the molecular formula C25H38O5 has 2.14 x 10^23 carbon atoms. What is the mass of the sample?
the term vapor pressure almost always means the equilibrium vapor pressure. what pysical arrangement is needed to
A gas has a volume of 4.00 L at 0 degrees C. What final temperature, in degrees C, is needed to cause the volume of the gas to change to the following, if "n" and "P" are not changed? a) 100. L; b) 1200 mL; c) 250 L; d) 50.0 mL.
Forecast the precipitate that forms when aqueous solutions of silver nitrate and potassium chloride react to form products in a double-replacement reaction. Include a discussion of how to write the complete chemical equation describing this reacti..
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