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Explain what is the molality of Cl- ions in 5.11% by mass CaCl2(aq)? The molar mass of calcium chloride is 110.98g/mol.
What is the quantity of Fe2O3 that will be produced if 5.00g of FeS2 is reacted with 11.0g of oxygen according to the following reaction
a 0.2200g sample of 99.35 pure copper wire is dissolved in concentrated nitric acid. after the addition of an excess of
A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M nickel(II) ion solution and another electrode composed of copper in a 1.0 M copper(I) ion solution, connected by a salt bridge. Calculate the standard potential for t..
For the reason that lone pairs are larger than bonding pairs, lone pair-lone pair interactions are greater than lone pair-bonding pair interactions, define which are in turn larger than bonding pair-bonding pair interactions
Write a balanced equation for the combination reaction described, using the smallest possible integer coefficients. When zinc oxide combines with water, zinc hydroxide is formed.
The boiling point elevation of an aqueous sucrose solution is found to be 0.39*C. what mass of sucrose molar mass 342.30 g/mol would be needed to dissolve in 500.0g of water? Kb (water) = 0.512*C/m
Consider a mixture of air as well as gasoline vapor in a cylinder with a piston. The original volume is 50. cm3. Explain if the combustion of this mixture releases 935 J of energy, to what volume the gases will expand against a constant pressure o..
What mass of potassium bromide residue remains if 500.0 mL of 0.200 M potassium bromide solution are evaporated to dryness.
The central atom has 4 electron domains. d) The central atom has 5 electron domains. e) The central atom has 2 electron domains.
which mixture would not be expected to be homogeneous? pentanol and hexane kbr and water acetic acid and methanol
Explain why is the major product between p-anisaldehyde and acetophenone the crossed aldol product rather than the Cannizzaro reaction or the self-condensation of acetophenone
depict the hydrogen bonding three water molecules in a
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