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What is the net redox reaction that occurs when Au comes into contact with acidic KMnO4
A mixture of CH4 and H2O is passed over a nickel catalyst at 100 degrees K. The emerging gas is collected in a 5.00-L flask is found to contain 8.62g of CO, 2.60 g of h2, 43.0 g of CH4, and 48.4 g
One kilogram of air is allowed to expand reversible in a container behind a piston in such a way that the temperature remains constant at 260°C
Assume the density of the vinegar solution is 1.00 g/mL and 5.00% by mass acetic acid. Determine the volume of vinegar that can be neutralized with 25.0 mL of 0.100 M NaOH.
Calculate the difference in volume between this solution and the total volume of water and methanol that were mixed to prepare the solution.
If 25.0 mL of AgNO3 is needed to precipitate all the Cl- ions in a 0.795 mg sample of KCl(forming AgCl), what is the molarity of the AgNO3 solution?
Geothermal heat is having another "revival". Explain how it works in a home and how much it would cost to add this to your home (determine your square footage or use an average 2000 square foot hom
Calculate the molar mass of a vapor that has a density of 6.735 g/L at 13°C and 825 torr.
You have prepared a saturated solution of at 20 degree celcius using 31.0 of water. How much more solute can be dissolved if the temperature is increased to 30 degree celcius?
A sample of argon gas has a volume of 795 at a pres-sure of 1.28 and a temperature of 104. What is the final volume of the gas, in milliliters, when the pressure and temperature of the gas sample ar
You have 250.0 mL of 4.00 M sugar solution. You add 319.7 mL of water to this solution. Determine the concentration of the sugar solution after the water has been added.
A 20.0- mL sample of 0.150 M KOH is titrated with 0.125 M HClO4 solution. Calculate the after the following volumes of acid have been added. find the pH for 20.0 mL
An infant ibuprofen suspension contains 100 mg /5.0 mL suspension. The recommended dose is 10 mg/kg body weight. How many mL of this suspension should be given to an infant weighing 15lb?
A 250.0 mL aliquot of 2.50 M H2SO4 solution is mixed with a 250.0 mL aliquot of 4.00 M HNO3 solution. What is the molarity of hydrogen ions in the combined solution?
A solution is made by mixing 506 mL of water and 198 mL ethanol. What is the concentration of ethanol in units of volume/volume percent?
If a .512g sample of sodium carbonate requires 25.3 mL of a sulfuric acid solution to reach the end point for the reaction, what is the molarity of the sulfuric acid?
A reaction having time independent stoichiometry follows the equation A+2B =2Z . suppose the initially there are present 0.28 mol of A , 0.39 mol of B & 0.13 mol of Z . after a certain time 0.18
If 67.2 g of P4 is burned, 1620 kJ of energy is evolved. What is the molar enthalpy of combustion of P4 if the process was carried out under constant pressure? & ;
What is the volume percent of a solution prepared by dissolving 43 g of NaOH in enough water to make a final volume of 120 ml
A Mixture of 80mL of Hydrogen Gas and 60 mL of Oxygen gas is ignited by a spark to form water (please show work)a) does any gas remain unreacted?
If CO at constant pressure was burned with excess air and the measured temperature of exit gases was 981 degrees Celsius. What was the percent of excess air used? The reactant entered at 93 degrees
What is the boiling point of water at an elevation of 1.15×104 ? Express your answer with the appropriate units.
Analysis of the products revealed that 0.1356 g of water were produced. How many moles of H are present in the sample?
If 348 grams of K2SO4 (molar mass 174 grams) is dissolved in enough water to make 500 milliliters of solution, what are the concentrations of the potassium and sulfate ions?
The tabulated mass of Cl is 35.45 amu. The two dominant isotopes of naturally occurring Cl are 35Cl (34.97 amu) and 37Cl (36.97 amu). What are the relative abundances of 35Cl and 37Cl?