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Calcium crystallizes with a body-centered cubic structure a)how many Ca atoms are contained in each unit cell? b)how many nearest neighbors does each Ca atom posses? c)Estimate the length of the unit edge a, from the atomic radius of calcium (1.97 A). d)Estimate the density of Ca metal
What is the vapor pressure, at 28 degrees C, of a solution made by mixing 80.0 g of C3H7SH and 120.0 g of CH3CN, if Raoult's Law is obeyed
The KHP you used had not been dried. b) When filling the buret with NaOH you left a air bubble in the buret tip.The bubble was released during your first KHP titration.
The first steps in the radioactive decay of 257 Uuh involves the rapid and successive emission of 2 alpha particles. [Note: Uuh is the symbol for ununhexium, which is element number 116.]
describe one or more simple chemical tests that would distinuish acetaminophen from ibuprofem
The heat capacity of the calorimeter itself was 883 J/K and it contained 830.1 g of water (c = 4.184 J/g.K). If the temperature increased by 13.2°C, what is ?E (in kJ) for the combustion of 1 mole of sucrose? Enter your answer in exponential form,..
Each of four compounds shown has one signal in the aromatic region and one signal in the alkyl region of its H NMR spectrum. Use the integral values to determine which compound's H NMR spectrum is shown below
How many mL of each of 0.10 M lactic acid solution and 0.10 M NaOH solution are needed to make 800 mL of a buffer of pH 3.50?
boiling water at sea level is hotter than boiling water in the mountains. Water used to sterilize surgical equipment is heated to 120 degrees C at 2.0 atm in an autoclave.
How many grams of dry NH4Cl need to be added to 1.60L of a 0.700M solution of ammonia NH3 to prepare a buffer solution that has a pH of 8.98 Kb for ammonia is 1.8X10^-5 Express your answer (mass of NH4Cl) numerically in grams to three significant ..
An electron in the ground-state He+ ion undergoes a transition to a state described by the wavefunction R4,1(r)Y1,1(?,). (a) Describe the transition using term symbols. (b) Compute the wavelength, frequency, and wavenumber of the transition.
A chemical process requires 8.700 g-mol of calcium sulfate (CaSO4) for a reaction. How many grams are in 8.700 g-mol of calium sulfate
How many moles of carbon monoxide react with 1 mole of oxygen gas according to the balanced chemical equation?
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