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A salad dressing consists mainly of olive oil and vinegar. The density of oil is 0.918 g/cm^3, the density of vinegar is1.006 g/cm^3, and the two do not mix. If a certian mixture of olive oil and vinegarhas a total mass of 397.8g and a total volume of 4228 cm^3, what is the volume of oil and what is the volume of vinegar in the mixture?
CO(g)+2H2(g)->CH3OH(g) How many moles of each reactant are needed to produce 3.60 X 10^2g of CH3OH?
What is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants?
Make a FLOW CHART on how a mixture of phenol, benzoic acid, p-nitroaniline and anthracene can be seperated by EXTRACTION.
The Henry's law constant for helium gas in water at 30°C is 3.7 10-4 M/atm; that for N2 at 30°C is 6.0 10-4 M/atm. If the two gases are each present at 1.2 atm pressure, calculate the solubility of each gas. What is the Molarity of He and N2
The work function of an element is the energy required to remove an electron from the surface of the solid element. The work function for lithium is 279.7 kJ/mol.
Determine the ΔH solution for this compound If the heat of solvation for this compound = -30.8 kJ/mol , crystal lattice energy = -62.2 kJ/mol.
KCL has the same structure as NaCl, the length of the unit cell 638 pm the denstiy of KCl is 1.984 g/cm3 and its formula mass is 74.55 amu. what is avogadro's number?
Talc is a mineral that has low conductivity for heat and electricity and that is not attacked by acid. It is used as talcum powder and face powder. A sample of talc weighs 35.97 g in air and 13.65 g in mineral oil (d = 1.75 g/cm3). What is the den..
This is for two dimensional arrays with both positive and negations ions alternating in a square pattern. I am given the hint to select an area with boundries through the middle of the outermost ions-ie the edge ions count as 1/2
3.00 g of NaOH are dissolved in 100.0 g of water in a coffee cup calorimeter. The temperature change is +7.50 degrees celcius. Calculate the enthalpy change involved in the process.
Suppose that an excess of propane, C3H8 burns in 320 g of O2. How many moles of H2O will be formed? C3H8 + 5 O2 → 3 CO2 + 4 H2O
A 50.0 mL sample of aqueous Ca(OH)2 requires 32.66 mL of a .812 M nitric acid for neutralization. Calculate the concentration (molarity) of the original solution of calcium hydroxide.
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