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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
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
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 pair of elements would you expect to exhibit the greatest similarity in physical and chemical properties? WHY?
Lewis Structure for a Nitrate Ion (NO3-1). For the correct structure of the nitrate ion, what is the bond angle from O-N-O?
Lewis Structure for a Nitrate Ion (NO3-1). How many possible resonance structures are there for the nitrate ion
Lewis Structure for a Nitrate Ion (NO3-1). Assign the formal charge for the central atom, Nitrogen. What is that formal charge
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.
Which of the following chemical equations corresponds to the standard molar enthalpy of formation of N2O
Use line notation to represent the electrochemical cells for each of the following overall redox reactions. Part A: Ni2+(aq)+Mg(s) Ni(s)+Mg2+(aq)
Write the standard half-cell reduction reaction equation for reactive species in the beaker. B) Determine the cell potential(Ecell) at the moment of mixing.
what would "standard conditions" for this galvanic cell be. If the cell is at standard conditions, determine the cell potential(E cell).
A person is exposed for three days to identical amounts of two different nuclides that emit positrons of roughly equal energy. The half-life of nuclide A is 18.5 days and the half-life of nuclide B
A mammoth skeleton has a carbon-14 decay rate of 0.46 disintegratioins per minute per gram of carbon (0.46 dis/min*g C)
If 27.0 mL of 0.0200 M KMnO4 were required to titrate a 0.425 g sample of K3[Fe(C2O4)3] * 3H2O, what is the % purity of the complex
Titration of an oxalate sample gave the following percentages of percent oxalate: 12.28%, 12.54%, and 12.24%. Calculate the average and the standard deviation
write the sybolic representation for the galvanic cell. what would "standard conditions" for this galvanic cell be? If the cell is at standard conditions, determine the cell potential(E cell).
1.0 M acid and two pt electrodes connected to a voltmeter. You then add 10.00 ml of 1.00 M Fe^+2 solution to the beaker. The temperature of the solution is maintained at 25 C.(R= 8.314 coulomb V/(mo
For the following reaction, calculate the concentration of C(aq) at equilibrium when .135M B solution is alllowed to react with A. A(liquid) + B(aq) ---> C(aq) + D(aq)
125 mole of oxygen gas is added to carbon in a .25L container. The mixture equilibriates at 500K. Calculate the equilibrium concentration of carbon monoxide, knowing that K=.086 at 500K. C(s) + O2(g
When a positron and an electron collide and annihilate each other, two photons of equal energy are produced.
Assuming that teh F-18 can be transported at 58.0 miles/hour, how close must the hospital be to the cyclotron if 63% of the F-18 produced is to make it to the hospital
A patient is given 0.055mg of technetium -99m, a radioactive isotope with a half-life of about 6.0 hours.
Calculate the quantity of energy produced per gram of reactant for the fusion of two H - 2 (atomic mass = 2.014102 amu) atoms to form He-3 (atomic mass = 3.016029 amu) and one neutron.
3.2 x 10-3 moles of O2 gas effuse from a container in 10.0 minutes. How many moles of CH4 gas could effuse from the same container in 10.0 minutes under the same conditions