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Potassium fluoride has the same lattice structure as sodium chloride.
What is the number of fluoride ions closest to each potassium ion in a crystal of potassium fluoride?
Calculate the amount of heat (in kJ) required to convert 63.3 g of water to steam at 100°C. Use the correct amount of sig figs.
ethanol c2h5oh and gasoline assumed to be all octane c8h18 are both used as automobile fuel. if gasoline is selling for
At 25 degree celcius, the density of a 50 percent by mass ethanol/water solution is 0.914 g per subic centimetre. Given that the partial molar volume of water in the solution is 17.4 cubic centimeter per mol.
a mixture of barium and silver is to be analyzed. the barium component reacts with acid to generate hydrogen gas while
The production of NO gases is an unwanted side reaction of the main engine combustion process that turns octane,C8H18 , into CO2 and water. If 85% of the oxygen in an engine is used to combust octane, and the remainder used to produce nitrogen dio..
a system receives 93 j of electrical work performs 227 j of pressure-volume work and releases 155j of heat.what is the
A solution of sodium chloride contains 502 g NaCI in 900 grams of water. what is the concentration of the colution in parts of a million (ppm)? Round to the nearest tens place. don't forget the unit.
A mixture containing 3.9 moles of NO and .94 moles of CO_2 was allowed to react in a flask at a certain temperature according to the equation
Problem- Calculate the concentrations of all species in a 1.00M Na2SO3 sodium sulfite solution. The ionization constants for sulfurous acid are Ka1=1.4x10^-2 and Ka2=6.3x10^-8
When water and cyclohexane are mixed, two layers form. Is the bottom layer water or cyclohexane? 2. The density of a solid with a melting point of 44°C to 46°C was determined to be 0.96±0.02 g/mL. What is the solid? 3. The density of a liquid w..
The distance between layers in a crystal is 281 pm. X rays are diffracted from these layers at an angle of 19.0°. Assuming that n = 1, calculate the wavelength of the X rays in nm.
How could you make a dilute solution (ex. 0.5% (w/v) sucrose) more concentrated (without adding more sucrose)?
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