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Describe the following combinations as either soluble or insoluble. 1. Sand sinks to the bottom of a beaker of water. 2.Antifreeze and water mix completely. 3. Benzene, a liquid, floats on the surface of water.
Explain why ionic components are formed when a metal from the left side of the periodic table reacts with a non-metal from the right side. give two examples of each
35 mL air sample collected at 31 C has a pressure of 575 torr. What pressure will the air exert if it is allowed to expand to 476 mL at 56 ? C? Answer in units of torr.
Determine the ionization energy (in kilojoules per mole) of a metallic element if light of wavelength 67.2 nm ejects electrons with a speed of 2165 km/sec.
Provide a structure for the following compound: molecular mass 101; IR: 3397, 3200, 1655, 1622 cm-1; 13C NMR: ? 27.5, ? 38.0 (weak), ? 180.5 (weak).
The aqueous electrolytic solution (d= 1.230 g/cm^3) in a typical automotive battery contains approximately 368 g of hydrogen sulfate (H2SO4, sulfuric acid, MM= 98.07948 g/mol) per liter. Calculate the following concentrations
Under what conditions will the endothermic reaction, 2 Na2O(s) 4 Na(s) + O2(g), be spontaneous?
Draw the structure of oxaloacetate and clearly show which carbon atoms are 14C and which are 13C labeled. Draw a box around your answer.
Write the balanced formula unit equation for the reaction of dinitrogen pentoxide, N2O5, with water to form an acid. What is the sum of the coefficients in the balanced equation?
Enzyme can react with only a single substrate. Enzyme has a cofactor that promotes the catalytic activity
Assume that the kinetic energy of a 1500kg car moving at 95 km/h can be converted entirely into heat. What amount of water could be heated from 20 C to 50 C by the car's energy?
calculate the vapor pressure of the pressure cooker if the temperature inside the pressure cooker is 119 degree celcuis.
Assuming that the total pressure of the gases is 1.52 and that their mole ratio is 94 : 4.0 : 1.5 : 0.50, calculate the partial pressure (in atmospheres) of each gas.
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