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The density of an element is 2.540 g/cm3. The element crystallizes in a face centered cubic lattice as well as has a crystallographic radius of 216.37 pm. What element is it?
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of PbO2(s) will be: BrO3-(aq) + Pb(OH)42-(aq) --> Br-(aq) + PbO2(s)
For the subsequent reaction at equilibrium which choice gives a change that will shift the position of equilibrium to favor formation of more products
a common experiment to determine the relative reactivity of metallic elements is to place a pure sample of one metal
Describe the detailed structure of DNA and explain the manner in which this structure replicates itself in both prokaryotes and eukaryotes
Find out the number of grams of Na2SO4 that can be prepared by the reaction of 7.44g of NaOH with sufficient H2.
silicone has a face centered cubic crystal structure with unit cell length of 5.43 angstroms and four atoms per unit cell. A) how many silicon atoms are there in 1 cm3 of material
Calculate the pH and the concentrations of all species present in a 0.19-M solution. The acid dissociation constants are K1 = 5.9 10-2 and K2 = 6.4 10-5.
Suppose that at a particular moment during the reaction, molecular hydrogen is reacting at the rate of -0.555 M/s. (a) At what rate is ammonia being formed?
How many L of H2 gas (at STP) is produced from 470 mL of 0.36 M HCl and excess Zn? The reaction is: Zn + 2HCl = ZnCl2 + H2
How many water molecules are in a block of ice containing 1.50 mol of water (H_2O)?
isotonic saline solution which has the same osomotic pressure as blood can be prepared by dissolving 0.923 of in enough
why are active on-duty firefighters likely to experience the adverse health effects from inhaling 300 ppm of carbon
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