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Estimate the density of the metal when a metal sample weighing 25.876 grams was added to a graduated cylinder containing 25.00 mL of water? The volume of the water plus the sample was 29.55 mL.
Estimate the liquid and vapor compositions of a binary mixture of isobutene (a) and hydrogen sulfide (b) at the 4.5oC and8.77bar. The excess Gibbs energy can be illustrated by the three suffix mar gul
Explain the type of bonding that exists in the Cl2 molecule. Discuss how does this type of bonding differ from that found in the HCl(g) molecule and determine how is it similar?
Estimate the mass in grams of the excess reagent remaining after he complete reaction of 5.91 g of NO2 with 1.54 g of H2O.
Calculate the balanced equation for this reaction, including the phase labels when a solution of lead sulfate reacts with a solution of sodium chloride to form lead chloride and aqueous sodium sulf
Write down a chemical equation that explains the dissolving of solid magnesium nitrate, Mg(NO3)2 in the water. Include charge on ions, describes the symbols, and balance the equation.
A feed stream contains a mixture of 30% n-pentane, 40% n-butane and the 30%n-hexane flows into a flash unit. The Flash temperature is 290K and the flash pressure is 0.6 bar.
Estimate a calibration curve and why do we use a calibration curve to calculate the concentration of our unknown? Explain what would be the absorbance expected if the sample is diluted to a concentrat
The flower nursery manages 50,000 flowers and year sells 10% of flowers and plants 4,000 new ones. Write the recursive formula which gives number of flowers every year.
Suppose you need to prepare the 4-methyl-2-pentyne and discover that the only alkynes on the hand are propyne and acetylene. You also have available methyl isopropyl bromide, iodide and 1,1-di
Estimate the enthalpy change when 8.50L of ozone at a pressure of 1.00 atm and 25°C reacts with 12.00 L of nitric oxide at the same initial pressure and temperature?
When the rock is dropped from the cliff into the ocean, it travels approximately 16t^2 feet in t seconds. If splash is heard 2.5 seconds later and speed of sound is 1100ft/sec, approximately height
Estimate the temperature at which water boils on a day in the mountains when the barometric pressure is having 593mmHg where the heat of vaporization of water is 40.79 kJ/ mol.
Estimate the likely molecular formula for this compound? The boiling point of another member of this homologous series was found to be 309 k.
To effuse from a hole in a chamber a given volume of nitrogen needed the 68.3 seconds. Under the same conditions, another gas needed 85.6 seconds for the same volume to effuse. How can estimate the
Determine the numbers of oxide ions surround each Mg2 + ion as nearest neighbors? MgO has the same cyrstal structure as NaCl, face-centered cubic.
Determine the numbers of moles of Al2(SO4)3 can produce under these conditions mol. Determine the numbers of moles of the excess reactant remain after the completion of the reaction?
From the signing, O=72 degrees from point C to point B. Point B is directly across river from point A. Find How wide is river?
The radius of the oil spill (in meters) is 50 times square root of time t (in hours). Write rule of the function f which gives radius of spill at time t.
Determine the van's Hoff factor for the electrolyte. A dilute electrolyte solution is prepared by dissolving the iron (III)chloride in the water. It is found to have a freezing point of-2.90 C. Cal
Determine the numbers of energy is needed to vaporize the 125g of benzene, C6H6, at its boiling point, 80.1 degrees C? where the heat of vaporization of benzene is 30.8 kJ/mol
The projectile is thrown upward so that its distance above ground after t seconds is h= -10t^2 + 420t. After how many seconds it reaches its maximum height?
The rectangular plot of land is to be enclosed utilizing two types of fencing. Two opposite sides will have heavy duty fencing costing $3/ft. Determine the formula for area A of rectangular plot in t
The ball is thrown upward with the initial velocity of 25 meters/second from the cliff that's 200 meters high. Height of ball is provided by quadratic equation.