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Calculate the mass (include units) of the unknown sample to produce 250 mL of a solution at about [Ca2+] = 0.005 M. Assume that the weight percent of CaCO3 in the unknown is 50%
solving this question helps the student to understand how to find the limiting reactant alternate method and how to
how many grams of iron will react with water to form iron (III)oxide and 85 liters of hydrogen gas at 19 degrees celsius & 525 torr?
Explain how effective clean coal technologies are with regard to reduction in carbon dioxide pollution levels and minimization of the carbon footprint.
2.0 mL ethanol with 1.0 mL ethylene glycol (HOCH2CH2OH) calculate the theoretical vapor pressure at room temperature for the solution above. using raoults law
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
There are two stable isotopes of gallium. their masses are 68.9257 amu and 70.9249 amu. If the average atomic mass of gallium is 69.73 amu, what is the natural abundance of the lighter isotope
A 4.00 g sample of the metal nitrate M(NO3)2, in which M is an unknown metal was dissolved in water and treated with excess aqueous sodium sulfate. The sulfate salt that is formed in the reaction weighed 3.318 g. Determine the identity of the meta..
the heat of vaporization of water 40.66 kjmol at 100 degc. compute the quantity of heat that is absorbedreleased when
A chemistry handbook lists the solubility of sodium Iodide as 184 grams per 100mL of water at 25 degrees celsius. How many moles of NaI can be dissolved in 100mL of water at 25 degrees celsius?
What is the equilibrium partial pressure of N2O4? (atm) (b) Calculate the value of Kp for the reaction. (c) Calculate the value of Kc for the reaction.
How would you distinguish between the following pairs by use of infrared spectroscopy only? Tell what absorption would be present or absent in each case. Write balanced equation for the oxidation of tolualdehyde
When 6.533 g of silver nitrate reacts with excess aluminum, how many grams of silver metal and aluminum nitrate forms?
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