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An ion contains a tin atom and three chlorine atoms. The Cl-Sn-Cl bond angles are less than 109.5 degrees. What is the ion, charge on the ion and hybrid orbitals used by Sn
Radioactive nitrogen-13 has a half-life of 10 minutes. After 40 minutes, how much of this isotope would remain in a sample that originally contained 96 mg?
How many grams of precipitate are formed if 0.27 grams of barium nitrate is mixed with 0.2 L of 0.8 M potassium carbonate?
A proton in a linear accelerator has a de Broglie wavelength of 138 pm. what is the speed of the proton?
If a solution containing 60.998 g of mercury(II) perchlorate is allowed to react completely with a solution containing 10.872 g of sodium sulfide, how many grams of solid precipitate will be formed?
a temperature of 37 degrees Celcius were heated to a temperature of 250 degrees Celcius. If the volume does not change, what is the new pressure of the gas in atmospheres?
Write an equation to show how the base NaOH(s) behaves in water. Include states of matter in your answer.
A portable electric water heater transfers 255 watts (W) of power to 5.5 L of water, where 1 W = 1 J/s. How much time (in minutes) will it take to heat the 5.5 L of water from 24 degrees C to 41 degress C? (Assume that the water has a density of 1..
What is the pH of a soft drink in which the major buffer ingredients are 6.5 g of NaH2PO4 and 8.5 g of Na2HPO4 per 355 mL of solution?
Sulfur-38 has an atomic mass of 38.0 and a half-life of 2.87 hours. How long will it take for 99.99% of a sample of sulfur-38 to decay.
If 3.5 mol of C3H8 and 14.0 mol O2 are placed in a closed container and they react to completion (until one reactant is completely used up), what compounds will be present in the container after the reaction and how many moles of each compound are..
The introduction state that often the rate doubles for each temperature increase of 10degree celcius. What value of the activation energy would cause the rate to double between 25~35degree celcius? ((k value)
Write a net ionic equation for the precipitation reaction, if any, that occurs when aqueous solutions of the following ionic compounds are mixed. Cu(Ch3COO)2 and Na3PO4.
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