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Write and balance an equation for the decomposition of calciumcarbonate to form calcium oxide and carbon dioxide.If you heat 100g of calcium carbonate what mass of carbondioxide should be produced? If you only collect 38.5 g of carbondioxide gas, what is the percent yield of your reaction?
What is the similarity in these diagrams? The sodium ion and the neon atom are isoelectronic (have the same electron configuration).
What is the temperature of the sample, in degree celsius? can you please show steps?
The final temp of the water is 30.8 C. Calculate the mass of water in calorimeter
air monitoring provides the following contaminant concentrations at the approximate center of a fire scene in which
How many milliliters of 0.200 M FeCl3 are needed to react with an excess of Na2S to produce 1.38 g of Fe2S3 if the percent yield for the reaction is 65.0%? 3 Na2S(aq) + 2 FeCl3(aq) ? Fe2S3(s) + 6 NaCl(aq)
Calculate the molar solubility of Fe(OH)2 in a buffer solution where the pH has been fixed at the indicated values. Ksp = 7.9 x 10-16. When pH is 7.8
How much heat is needed to raise the temp. of 25.0 g of gold from 23C to it's melting point at 1063C? I know the answer is 3.4 KJ but need to know how to get the answer if unknown.
Calculate the pH in the titration of 25.0 mL of 0.100 acetic acid by sodium hydroxide after the addition
14 grams of water at 298 K are placed in an evacuated steel container whose volume is 10 L. If we assume that the volume of the liquid water may be ignored relative to the volume of the container, answer each of the following question
silver (I) perchlorate into a 50.ml volumetric flask and filling the flask to the mark with water. calculate the concentration in mol/L of the silver (I) perchlorate soluation
An overly efficient student simultaneously prepared two titration mixtures, consisting of diluted bleaching solution, KI solution, and HCI solution.
A student wants to prepare exactly 1000 mL of a 0.500 M aqueous potassium hydroxide solution. What mass of potassium hydroxide should the student dissolve in the solution?
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