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1.52g of an oxide of nitrogen contains 0.56 g of oxygen. determine the empirical formula of the compound.?
If 3.98 g of copper was recovered and you started with 9.10 g of copper (II) chloride, then what is the percent yield of the reaction ?
Using the equation pKa= -log Ka, calculate the Ka from the pH value and the starting acetic acid concentration. Calculate the Ka of acetic acid.
What is the molarity of an NaCl solution prepared by dissolving 9.3g NaCl in sufficient water to give 350mL of solution.
What volume of Maker's Mark was consumed if the individual was drinking Maker's Mark (130 proof),?
Determine the pressure of a gas using the ideal gas law - Calculate the pressure inside the vessel after all the dry ice has been converted to CO2 gas.
If 95 0C of heat are added to a pure gold coin with a mass of 20 gm, what is its temperature change? Specific heat capacity of gold is 0.128 .
Estimate the average concentration of methylene chloride. Look up the TL V or the 1WA for methylene chloride and consider how the: evaporation might be performed.
Compute the ratio of the concentration of H 2 CO 3 to that of the HCO 3- if The pH of a bicarbonate-carbonic acid buffer is 8.50
A flask contains 0.180 of liquid bromine br2, . Determine the number of bromine molecules present in the flask.
A 0.50 mol/L solution of codeine has a pOH of 3.05. What is the Kb value of codeine?
If 138 mL of wet H2 is collected over water at 24°C and a barometric pressure of 748 torr, how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 torr at 24°C.)
Determine how many moles of Trisodium phosphate would be required to react with 4.0mol of Silver Nitrate?
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