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The calcium from 0.5456 g limestone sample dissolved in water was precipitated as calcium oxalate as well as ignited to calcium carbonate for weighing. The ignited precipitate weighed 0.2678g. Compute the percentage of calcium in the limestone sample.
Calcium hydride, CaH2, reacts with water to form hydrogen gas. CaH2(s) + 2 H2O(l) → Ca(OH)2(aq) + 2 H2(g)
suppose that after delivery several drops of the water cling to the inner wall of the pipet because the pipet wall is
Drawing and naming structures; IUPAC names, Give the structure or structures and the IUPAC names of the alkenes formed from the dehydrohalogenation of the following compounds with a strong base
if the height of the mercury column in the leveling bulb is 30 mm greater than that in the gas buret and atmospheric
Next calculate molar internal energy and molar heat capacity assuming vibrational energy levels are not significantly populated at 298 K and do not contribute to molar heat capacity and molar internal energy. Calculate percent error for each molar..
A 1.0g sample of an unknown salt (molar mass = 40 g/mol) is added to 75.0mL of water. The temperature of the water rises 32oC after the salt is added, what is the molar heat of solution for the salt
Calculate the grams of O2 gas that will have the same volume as 300.0 g of N2 gas at 10 degrees C and 5 atm
1. in the determination of the quilibrium constant for the hydrolysis of 5.00ml of sbcl3 24ml of water was addedand
calculate the molar enthalpy of evaporation of water at 100 celcius?
Can someone help me locate the tetrahedral stereocenters and how many sterioisomers are possible for the following structures please
what is the mass percent of the helium in a mixture that has an equal number of He and CH4 molecules. 1.10%
How to calculate the volume of 1.5M aqueous pottasium hydroxide require to react completly with 2g of benzoic acid and extract the solution twice using the volume calculated?
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