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write the net ionic equation, excess concentrated sulfuric acid is added to solid calcium phosphate
Iron and oxygen react to form iron(III) oxide; 4Fe(s)+3O2(g)-->2Fe2O3(s). Determine the limiting reactant in each of the following mxtures of reactants
What is the concentration of an NaOH solution that requires 50.0 ml of a 1.25 M H2SO4 solution to neutralize 78.0 ml of NaOH?
Water vapor will react reversibly with methane (CH4) to produce carbon monoxide and hydrogen gas. The equilibrium, with a Kc = 0.26, is established at 9270C in a 0.32L flask which contains 0.26mol CO, 0.091mol H2, and 0.041mol CH4. What is the con..
How mush heat energy is reuired to melt one ice cube in a soft drink to form liquid water at 0 degrees C, if the ice cube has a mass of 18.9 g?
One of the students in lab decided to use two fractionating columns (one on top of the other) instead of just one. How would this a) affect the separation between hexane and heptane?
Calculate the change in entropy when one mole of ice at ?10.0°C and 1 atm is converted to liquid water at ?5.0°C and 1 atm
calculate the percentage of empty space in 1 mole of water at 25 c. obbtain the density from the experiment" some measurements of mass and volume."
The standard deviation of the analytical method was determined to be +/-2.3%. What is the standard deviation overall? And in order to reduce the overall standard deviation to +/- 5.0%
Find out How many grams of gasoline will fill a 12.5gal tank if a particular brand of gasoline has the density of 0.737 g/mL at the temperature of 25 degree Celsius?
For the reaction: 2NO(g)+2H2(g)-->2H2O(g) at equilibrium in a 4.0L container at 25oC. Suppose 2.5 mol of each component initally is put into the container. At equilibrium 2.5 mol of NO is present. What is Kc for the reaction at the temperature?
Calculate the mass of the reaction mixture in the calorimeter. (To do this, assume that the density of the HCl solution originally in the calorimeter can be approximated with the density of water (1.0 g/mL).
At equilibrium the pressure of NH3 (g) is 1.23 atm. NH4Cl (s) ---> NH3 (g) + HCl (g) Find the equilibrium constant Ka for the reaction
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