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the density of iron is 7.874 g/cm^3 at 300K. If iron forms a body-centered cubic lattice, what is the radius of an iron atom?
The molality of sodium nitrate solution us 1.44m. What is mole fraction of NaNo3. The molar mass of NaNo3 is 85.06g/mol
If (initially) 0.22 mol of Br2 and 0.22 mol Cl2 are introduced into a 1.0 L container at 400. K, what will be the equilibrium concentration of BrCl? Assume the initial product concentration is zero.
Under these conditions, how long would it take for a sample to decompose to 25% of it original concentration?
Conjugate Pairs of Acids and Bases, What is the base if the acid is H2PO4- and the equation of the pair?
A student in lab has 3.00 g of pure N2 in 0.541 g pure H2. The reaction happens following this equation: N2(g) + 3H2(g) → 2NH3(g) How many grams of NH3 would be produced?
A 26.0-g sample of ice at -10.0°C is mixed with 114.0 g of water at 72.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
If the temperature of the water in your reaction bowl is 23 C, what is the temperature of the hydrogen gas.
Draw the six conformers in newman projection for the 60 degree intervals from 0 to 360 degrees for carbon atoms 3 and 4. Clearly show which carbon is represented by the "dot" and the "circle" Show which C
If 1.0*10^15 atoms of Radium produce an average of 1.373*10^4 atoms of Radium per second, how many liters of Radium, measured at STP, are produced per day by 3.5g of Radium?
What is the percentage yield if 465 grams of hydrogen reacted with excess nitrogen and 455 grams of ammonia is formed N2 (g) + 3 H2 (g) 2NH3(g)
What is the pH of a buffer prepared by adding 180 mL of 0.100 M NaOH to 200 mL of 0.100 M acetic acid? (Ka for CH3COOH = 1.8 x 10-5)
Calculate the wavelength of the electromagnetic radiation required to excite an electron from the ground state to the level with n = 5 in a one-dimensional box 39.8 pm in length.
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