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A solid hydrate weighing 2.691g was heated to drive off the water. A solid anhydrous residue remained, which weighed 2.259g. If the anhydrous residue has a formula weight of 282, How much moles of water are present in one mole of anhydrous salts?
Explain how a disaccharide is formed from 2 monosaccharide molecules, hence explaining the difference in the chemical formulae
Give the cell notation based on the following reaction: Fe(s) + Hg2 ++ (aqueous) = Fe++ (aqueous) + 2Hg (l) the solution concentrations are 0.01 M
The mass of a cube of gold with one side measuring 150. cm is ______ kg. The density of gold is 19.32 g/cm3
Why is the density of an ethanol/water mixture dependant on temperature? and how would the density of the ethanol/water change IF the temperature was increased and decreased
The energy of electron-in-a 1 m box is given as (h^2*n^2)/(8mL^2). find the transition energy form n=3 to n=2. The mass of electron is 9.109e-31 kg and planck constant 6.626e-34 Js
The inventor proposed the revolutionary design of the new engine based on the heat stored in the ocean. The inventor plan is to mount it on a boat in San Francisco and set off on a journey across the Pacific Ocean.
The mole fraction of A in the vapor is found to be 0.67. What is the mole fraction of A in the solution?
Eight electrons can freely move in a box whose dimensions are 4m x 1m x 1m. sketch the occupied energy states and write the equation of the degenerated energies, including the quantum numbers, from the occupied states.
What is the final temperature of the water when equilibrium is reached? (Assume a density of 0.998 (g/mL) for water.)
This solution was back-titrated with a 0.0460 M Ga3+ solution until all the EDTA reacted, requiring 11.0 mL of the Ga3+ solution. What was the original concentration of the V3+ solution
when a metal was exposed to light at a frequency of 4.63*10^15 Hz, electrons were emitted with a kinetic energy of 3.10*10^-19 J.
If 100.0J of energy are added to 25.0g of water at 50 degrees celcius,what will the final temperature of the water be?
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