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How many moles of the limiting reactant are present in this reaction? What would be the circumference of a spherical balloon containing this amount of carbon dioxide gas?
A 2.14-g sample of a mixture of KCl and MgCl2 is treated with excess AgNO3(aq). If 5.11 grams of AgCl(s) are obtained, then what is the percentage by mass of KCl in the original mixture?
A volume of 10.0 mL of a .00300 M solution of Cl- ions are reacted with .500 M solution of AgNO3-. What is the maximum mass of AgCl that precipitates in grams.
If you start with 5.2x10^-2 M I2 at this temp, how much will remain after 7.68s assuming that the iodine atoms do not recombine to form I2?
Calculate the concentration of a red dye solution with an absorbance of 0.617. If you have 5.78ml of the solution how many mg of red dye are found in the solution.
If only 18% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
The 23rd-century starship Enterprise uses a substance called dilithium crystals as its fuel. Assuming this material is the result of fusion, what is the product of two Li-6 nuclei.
When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.310 grams. What is the molarity of the AgNO3 solution?
At 100 degrees C, the vapor pressure of water, methanol, and ethanol are 760, 2625, and 1694 torr, respectively. Which counpound has the highest normal boiling point? Idk how to answer this questio
If 55.6mL of BaCl2 solution is needed to precipitate all the sulfate ion in a 756mg sample of Na2SO4, what is the molarity of the solution?
In this reaction, the colorless NH3 gas is converted to the hard solid, NaNH2. Use Lewis structures to show the difference in bonding between NH3 and NaNH2.
How many milliliters of a stock solution of 6.80 M HNO3 would you have to use to prepare 0.150L of 0.470 M HNO3?
Explain why rubber stretches more than Teflon. Be specific about the structure of the polymer chains and the relevant forces.
Determine the mass percent ethanol in the sample used for the analysis. (The technician forgot to record the mass of the sample used in the analysis.
In the first 15.0s of the reaction, 1.6×10-2mol of O2 is produced in a reaction vessel with a volume of 0.380L . What is the average rate of the reaction over this time interval?
Calculate the mass of AgNO3(s) that must be added to 0.500 L of a solution of 0.154 M NaCl solution to precipitate ‘all' of the chloride ion.
13.0 mL of 0.40M copper(II) sulfate react to form as much product as possible, how many millimoles (mmol) of the non-limiting reactant will remain unused at the end of the reaction?
Calculate the pressure (in pascals and atmospheres) exerted by a mass of 1.0 kg pressing through the point of a pin of area 1.0 x 10-2 mrrr' at the surface of the Earth. Hint. The force exerted by a
In the generation of polyurethanes (from diols and di-isocyanates), can you think of examples where use of less diol than diisocyanate might be a good idea?
Amines react rather quickly with epoxy groups - how might you slow the reaction down to give your customer more time to apply the product? How might you speed it up?
A gas mixture being used to simulate the atmosphere of another planet consists of 324 mg of methane, 217 mg of argon, and 228 mg of nitrogen.
The mass of the anhydrous, CaSO4 salt is 2.304 g. Calculate the percent by mass of water in the hydrated calcium sulfate salt.
How might the primary structure of such a protein help in distinguishing the portions of the protein embedded within the cell membrane from those positioned intracellularly or extracellularly?
What weight of A would be removed by four successive extractions with 25mL portions of hexanes? How much hexanes would be required to remove 98.5% of A in a single extraction?
A sample of an alloy (density = 9.62 g/cm3) was submerged in a graduated cylinder containing water. The water level in the cylinder rose from 166.5 cm3 to 182.0 cm3. How many grams did the sample we