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Suppose that an excess of propane, C3H8 burns in 320 g of O2. How many moles of H2O will be formed
Suppose the reaction Ca3(PO4)2 + 3H2SO4 ------ > 3CaSO4 + 2H3PO4 is carried out starting with 103 g of Ca3(PO4)2 and 33.7 g of H2SO4. How much phosphoric acid (H3PO4) will be produced?
The disappearance of X is monitored at timed intervals. Assume that temperature and volume are kept constant. The data obtained are shown in the table below.
when 50.0 gram of metal at 75.0 C is added to 100 grams of water at 15.0 C the temperature of the water rises to 18.3 C. Assume that no heat is lost to the surroundings. What is the specific heat of this metal
A 81 L sample of dry air cools from 145C to -22C while the pressure is maintained at 2.85 atm. What is the final volume?
The J=0 to J=1 transition for carbon monoxide (12C16O) occurs at 1.153 X 10^5 MHz. Calculate the bond length of carbon monoxide.
What is the freezing point of a solution of 1.17 g of 1-naphthol, C10H8O, dissolved in 2.00 mL of benzene at 20°C? The density of benzene at 20°C is 0.876 g/mL. Kf for benzene is 5.12°C/m, and benzene's normal freezing point is 5.53°C.
Molar Concentration of Copper (II) Nitrate, A 25.00 mL sample containing Cu2+ gave an instrument signal of 23.6 units (corrected for a blank). When exactly 0.500 mL of 0.0287 M Cu(NO3)2 was added to this solution
Tripeptide Protein: Acidic, Basic, or Neutral? Alanine has an R-group structure of CH3, cysteine has an R-group structure of HS-CH2, and aspartic acid has an R-group structure of HOOC-CH2
What is the Volume of 1.05mol of Benzene (C6H6) at 20.7 degrees C. The density of Benzene is 0.879 g/mL
If 0.628 moles of a substance weighs 77.3 g, what is the molar mass of the substance, in units of g/mol?
Consider the reaction NO + O3 → NO2 + O2 Which has a rate constant given by k = 1.8×10-12 e-1370/T cm3 molecules-1 s-1 .Use the following standard heats of formation.
A compound is analyzed and found to contain 12.1% carbon, 16.2% oxygen, and 71.7% chlorine (by mass). Calculate the empirical formula of this compound.
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