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Copper(II) chloride and lead(II) nitrate react in aqueous solutions by double replacement. Write the balanced chemical equation, the overall ionic equation, and the net ionic equation for this reaction. If 18.56 g of copper(II) chloride react, what is the maximum amount of precipitate that could be formed?
A 5.00 L flask at 279 K contains a mixture of He and O2 with a total pressure of 1.00 atm. If the mole fraction of O2 is 0.40, what is the mass fraction of O2?
what is the molarity of the solution formed by mixing 0.20 mol of sodium hydroxide with enough water to make 150 ml of solution
The question in the lab is asking what percentage by mass is the calcium, chloride and water in the orginal solution for each trial. In this lab we performed two trials, in each, we added 50 mL water to 2.0 g of CaCl2.
There are many types of energy: electrical, kinetic, gravitational potential, chemical, elastic, heat, etc. Choose an object or system in which energy is transformed from one form to another. Describe the energy transformations in this object or s..
A student used 22.0 mL of 0.1035 M NaOH to titrate 20 mL of orange juice. How many grams of citric acid were present in the sample? The molar mass of citric acid, H3C6H5O7, is 192.12 g/mol.
Suppose that the atomic mass unit (amu) had been defined as one-twelfth of the average mass of an atom of nitrogen instead of one-twelfth of the mass of an atom of carbon-12. What would the average atomic mass of potassium be on this new scale
calculate the theorretical yield of aspirin if 1.05 g of salicyclic acid is combined with 2.0 mil of acetic anhydride.
The element cesium (Cs) freezes at 28.4 degree celsius, and its molar enthalpy of fusion is delta H fusion =2.09kJ/mol. a.) when molten cesium solidifies to Cs (s) at its normal melting point, is delta S positive or negative? b.)calculate the valu..
Calculate the total degrees of freedom over the entire process. Next, calculate the degrees of freedom around each unit operation. Label all calculations.
Determine the amount of heat required to raise the temperature of a 153 g bar of gold by 50.0C. (specific heat of gold = 0.128 J/g.C)
A tank is being filled through a valve by an ideal gas where the following applies: H=30*T(K) in J/mol for gas, R=8.314 in J/mol/K, H=40 T(K) for the liquid in J/mol (gas as liquid, different reference point than gas)
What are all the sterioisomers of CHDCl-CH2-CHDBr What are all the sterioisomers of BrCHDCHDBr
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