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During the discharge of an alkaline battery, 4.30 g of Zn are consumed at the anode of the battery. What mass of MnO_2 is reduced at the cathode during this discharge? (in g) also How many coulombs of electrical charge are transferred from Zn to MnO_2}?
An ice cube of 15.1 grams is placed into 304 grams of H 2 O. compute the change in temperature in the H 2 O upon completing melting of the ice.
Calculate the ionic strength of a solution that is 0.05 mol/kg in Na3[Fe(CN)6](aq), 0.02 mol/kg NaCl(aq), and 0.03 mol/kg in NaBr(aq).
Beta-carotene is organge. This means it absorbs blue lgiht. It has conjguated systme which allows the pi-electrons to delocalize over teh length of the molecule.
Percent Mass and Stoichiometry, You are the science officer on the Starship Enterprise. The ship is circling a new planet. The away team comes back with some rocks and minerals
Vanadium(III) can reduce nitrate ion (NO3-) to nitrite ion (NO2-), producing VOCl3 also Write the BALANCED chemical equation for this reaction.
Calculate the sample weight of liquid bleach containing 5.0% by weight of NaOCl that would oxidize enough I- to consume 0.80 mL of 0.15 M sodium thiosulfate.
an aerosol can holds 0.35 L at 4.5 atm pressure. What is the volume when the gas is released into 1.0 atm pressure.
The principle quantum number defines the shell (which is roughly, but not quite exactly, the row, or period, of the periodic table). Demonstrate the difference between the rows of the periodic table
A balloon has a volume of 3.00 liters and a temperature of 56.0 celcius.if the volume increases to 7.00 liters, what is the new temperature in celcius?
How many grams of silver and how many grams of chloride ions are in 1 L of solution?
Consider radiation of wavelength of 4000 Angestroms, at a temprature of 3000 K. using a rayleighs- jeans law, calculate the energy per unit volume per energy wavelength?
determine the pressure in a 125-L tank containing 56.2 kg of oxygen gas at 21.0 oC
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