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Two molten salts were electrolysed in a series. One salt was mercury (II) bromine and the other was a salt of an unknown metal M. In the time taken to deposit 4g of mercury only 0.6g of metal M was produced. Calculate the charge on the ion of M. Hg = 200, M = 60.
How many grams of Helium does a 25.0 Liter balloon contain at 102.0 kPa and 24 degrees Celsius?
Net ionic equations to describe the formation of precipitate when soda ash (Na2CO3) is added to hard water
When a 18.5 g piece of copper originally at 99.5C is placed in 58.5 g of water at 24.0C, the temperature of the water rises to 26.1C. If the specific heat of water is 4.180 J , calculate the specific heat of copper. can you show work and the anser..
A sample of poylethylene is found to have an average molecular weight of 3.2x10^6. estimate the root-mean-square end-to-end distance if the sample is dissolved in a theta solvent. assume that the "persistence length" is equal to √2 times the C-C b..
Aluminum chlorhydrate is added to antiperspirants to stop people from sweating. If this compound contains neutral H2O molecules and Al3+, OH- and Cl- ions, and the formula of this compound is Alx(OH)5Cl 2H2O, what is the value of x in this formula
Mass of magnesium: 0.6 g Moles of magnesium. Mass of magnesium oxide: 1.00 g Moles of magnesium oxide
Problem- Calculate the concentrations of all species in a 1.00M Na2SO3 sodium sulfite solution. The ionization constants for sulfurous acid are Ka1=1.4x10^-2 and Ka2=6.3x10^-8
What is mass (in g) of copper can be recovered from 49.9 mL of a 0.628 M solution of copper(I) chloride and excess hydrogen
Write the Lewis-dot structure for the following species. If resonance occurs, draw all resonance forms. Give the formal charge and oxidation number of each atom in each species.
A 5.0 g sample of a hydrate of BaCl2 was heated, and only 4.3 g of the anhydrous salt remained. What percentage of water was in the hydrate?
Calculate ΔH of the reaction per mole of AgCl produced. Assume the density of the solution is 1.00 g/mL and the specific heat is 4.184 J/g °C
Which of the compounds contain chiral centers? (you may choose more than one answer)
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