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A 21.15 g piece of iron and a 25.05 g piece of gold at 100.0 degreesC were dropped into a 720.0 mL of water at 18.45 degreesC. The molar heat capacities of iron and gold are 25.19 J/(mol degreesC) and 25.41 J/(mol degreesC), respectively. What is the final temperature of the water and pieces of metal?
Determine the molarity of a solution formed by dissolving 15.79 grams of CaCl 2 , calcium chloride in 200.grams of H 2 O, water?
In a combustion reaction 4 moles of C8H18 react with 8 moles of O2. If the actual yield of CO2 produced is 28.16 grams, what is the percent yield?
25.2 mL of qater are placed in a graduated cylinder. A 22.6 g stone is dropped in, and the water level rises to 32.4 mL. Find the stone's density.
If the methane contained in 3.00 L of a saturated solution at 25 was extracted and placed under STP conditions, what volume would it occupy.
Determination of Molecular SO2 Needed for Protecting Wine, You have just finished fermenting a wine and the pH = 3.7. You need 2mg/L "molecular" SO2 to protect the wine. What level of free SO2 do you have to add to achieve the level of the molecul..
A solution is prepared by mixing 75.0 mL of 5.00 M HCl and 20.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution.
Solutions of AgNO3 and KCl are combined and 0.683 g of a precipitate are formed. What is the precipitate and how many moles were formed.
Find the volume of a gas inside a cylinder - What will be the resulting volume of this gas?
When 25.0 mL of 0.750 M CdCl2 is mixed with 40.0 mL of 0.120 M (NH4)2S, CdS precipitates from the solution. How many moles of CdS is formed.
The oxide of 'N' element contains 33.33% of the element .The same element forms a chloride whose Vapour density is 59.25.
A solution of 0.264 M NaOH is used to neutralized 54.0 mL H3PO4 solutions. if 1.0 mL of NaOH is required to reach end point what is the molarity of H3PO4
Explain the fact that even though dibenzoylmethane is not a methyl ketone it gives a positive iodoform test
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