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Zinc chloride (ZnCl2) is 52.02% chlorine by mass. What mass of chlorine is contained in 65.0 g of ZnCl2?Answer in units of g.How many moles of Cl is this?Answer in units of mol.
Find the intrinsic conductivity for germanium. (Assuming ni = 2.5x 1019/m3 at room temperature.)
What is the Ce 3+ concentration in a solution formed by combining 50.0 mL of 0.0500 M Ce 3+ with 50.00 mL of 0.150 M IO3-? The solubility-product constant for Ce(IO 3 )3 = 3.2 x 10 E-10.
As gas expands from 1.00 L to 2.50 L against constant pressure of 820 torr. Calculate the change in internal energy for the gas, if 120 J of heat is transferred to the gas during the expansion.
The solubility of N2 in blood at 37°C and at a partial pressure of 0.80 atm is 5.6 10-4 mol/L. A deep-sea diver breathes compressed air with the partial pressure of N2 equal to 3.6 atm.
A 5.00 % m/m glucose solution has d = 1.02 g/mL. What is the mass of glucose in 362 mL of the solution.
A sample of vanadium haveing 5.67 grams of mass upon heating combined with oxegen of 4.45gramsto make vanadium oxide. Determine the emperical formula for this compound?
Explain the structure for 4-ethyl-2,3-dimethyl-2-heptene?
Which of the following isotopes is more likely to decay via positron emission rather than electron emission.
An electron traveling at 3.7 X 10^5 m/sec has an uncertainty in its velocity of 1.88 X 10^5 m/s. What is the uncertainty in its position?
What are the boiling point and freezing point of a 2.47 m solution of naphthalene in benzene? (The boiling point and freezing point of benzene are 80.1°C and 5.5°C, respectively.
What is the molecular formula for the alkane with 39 carbon atoms? What is the molecular formula for the cycloalkane with 38 carbon atoms?
Distinguishing between Organic Molecules, What chemical tests might be used to distinguish between: pentanal and 2-pentanone, between benzyl alcohol and diphenylmethanol?
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