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What mass of lead sulfate is formed in lead-acid storage battery when 1.10 g of Pb undergoes oxidation?
Give the formula of a compound that contains a secondary hydrogen and Give the formula of a compound that is a secondary alcohol
If 25.00 mL of 0.200 M HCl is titrated with 0.200 M NaOH, what is the pH of the solution after the addition of 22.50 mL of NaOH
What volume (mL) of a concentrated solution of NaOH (6.00 M) must be diluted to 200. mL to make a 0.88 M NaOH solution
What mass of aluminum metal can be produced per hour in the electrolysis of a molten aluminum salt by a current of 20 A. Express your answer using two significant figures.
How many grams sodium chloride (mol wt = 58.4g/mole) are needed to make 550 mL of a 1.90 M aqueous solution of sodium chloride
Draw the Lewis Structure for a Nitrate Ion (NO3-1). Assign the formal charge for the central atom, Nitrogen. What is that formal charge
What is the molarity of an aqueous solution containing 75.3 g of glucose (C6H12O6, mol wt = 180 g/mole) in 35.5 mL of solution
Decide whether or not each of the following metals dissolves in 1M HCl. For these metals that do dissolve, write a balanced redox reaction showing what happens when the metal dissolves.
The density of silver is 10.5 g/mL. What is the mass (in grams) of a piece of silver with a volume of 23.6 mL
When the following equation is balanced, H2S + Fe(OH)3 ----> Fe2S3 + H2O the coefficient of H2S is
The Ka of acetic acid is 1.8 x 10^-5. Calculate the pH of a solution that is composed of 1.0 M CH3CO2H and 0.50 M NaCH3CO2. Can someone please help
What would the atom ratio of 206-Pb to238-U be in a uranium mineral from a rock that is 1.0× 10^9 years old? t1/2(238-U)= 4.5 × 10^9 yr.
A bottle of wine consists of an 11 weight percent solution of ethanol (C2H5OH) in water. If the bottle of wine is chilled to -20^oC, will the solution begin to freeze
The half-life of 32P is 14.3 days. If you begin with 4.9 ?g (micrograms) of radioactive 32P in the form of Na2HPO4, what mass remains after 28.6 days (about one month)
A current of 0.0100 A is passed through a solution of rhodium sulfate, causing reduction of the metal ion to the metal. After 3.00 h, 0.038 g of Rh has been deposited. What is the charge on the rhod
A voltaic cell with Mn/Mn2+ and Cd/Cd2+ half-cells has the following initial concentrations: [Mn2+] = 0.090M and [Cd2+] = 0.060M. What is the equilibrium concentration of Cd2+
With a solution in them connected by a liquid salt bridge junction filled with KNO3. In one solution you have a graphite electrode that is connected with a wire to a copper electrode in the second s
The molal freezing point constant for water is 1.86 C/m. At what temperature will a mixture of 2.00 g of CaCl2(MM: 110.98g/mol) and 25.00 g of water freeze
When 50.0mL of a 1.00M solution of Fe(NO3)3 is mixed with 50.0mL of a 1.00M solution of NaOH a precipitate forms. Determine the mass of the solid produced in this reaction
A sulfuric acid solution is 54.0% H2SO4 by mass and has a density of 1.59 g/mL at 20 C. What is the molarity and molality of the H2SO4 solutions
calculate the pressure change needed to completely hydrogenate this substance at room temperature and 50 degrees celcius.
What is the mass of H2SO4 in 520.0 cm3 sample of sulfuric acid that has a density of 1.55 g/cm3 and which consists of 55.0 % H2SO4
Determine the bond order of each and classify it as stable or non-stable. If stable, tell whether the species is paramagnetic or diamagnetic.
For each of the following species, draw its Lewis-dot structure. If the species exhibits resonance, draw all the resonance hybrids. For each species, tell its shape, bond angles, hybridization of th