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In the reaction: 2 Na + Cl2 = 2 NaCl, if 46.0 g of sodium react, what is the first step necessary in determining how much sodium chloride can form?
If the walls in a room are 955 square feet in area, and a gallon of paint covers 15 square yards, how many gallons of paint are needed for the room?
210 mg Ca(OH)2 and 210 Al(OH)3. A 8.3×10^-2 M HCl, which is similar to stomach acid, is used to neutralize 5.0mL of liquid antacid. How many mililiters of HCl solution are needed to neutralize Ca(OH)2, then Al(OH)3?
determine the moles of product ( Fe for this reaction) made by both reagents. what is the limiting reagent?
If 69.5 kJ of heat is applied to a 1025 g block of metal, the temperature of the metal increases by 11.4°C. Calculate the specific heat capacity of the metal in J/g°C.
A piece of metal with a mass of 18.2 grams was dropped into a graduated cylinder containing 16.50mL of water. The graduated cylinder after the addition of the metal is 18.40. Determine the density of the metal.
How do the following changes affect the value of the equilibrium constant for a gas-phase exothermic reaction:
determine what mass of AgCl silver chloride can be formed from 1.03L of a 0.132M solution of AgNO 3 silver nitrate
Calculate the difference in molar entropy (a) between ice and liquid water at 5.00 °C, and (b) between liquid water and its vapor at 90.0 °C and 1.00 atm. The differences in molar heat capacities on melting and on vaporization
an 11.0-g of NaCl is dissolved in 125 g of water, with both substance at 25.0'C. calculate the final temperature of the solution assuming no heat lost to the surrounding and assuming the solution has a specific heat capacity of 4.18J/'C g
calculate the SCF energies and the relative energies of the keto and enol tautomers of ethanal(acetaldehyde) in Kcal/mole
What is the pH of the buffer that result when 12 g of NaH2Po4 and 8.00 g of NaHPO4 are diluted with water to a volume of 0.50 L. ( Ka of H2PO4- = 6.2*10^-8 , the molar masses of NaH2PO4 and Na2HPO4 are 120.0 g/mol and 142.0 g/mol respectively).
Calculate the molar mass of a gas if 4.40 g occupies 3.50 L at 560 torr and 41°C.
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