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Calculate the density in grams per liter of the following gases at 29.7 degrees Celsius and 700 torr: NH3, N2, N2O
A thyroid condition called Goiter can be treated by increasing Iodine in the diet. Iodized salt contains Calcium Iodate, Ca(IO3)2, which is added to table salt.
A 100.0 g sample of water at 90.°C is added to a 500.0 g sample of water at 10.°C. Calculate the final temperature of the water.
what is the percentage yield if 400 grams of chlorine react with excess potassium bromide to produce 820 grams of bromine
Brine is a heavily salted solution used for pickeling. What tests could be used to identify the ions present? What should uoi see
A 28.5 g sample of an unknown metal is heated to 95.0C and then dropped into 58.0 g of water in a coffee-cup calorimeter. The temperature of the water rises from 23.5 C to 27.1C.
What is the second step in the scientific method? 1-to analyze the data, and create a theory to confirm the experimental observations 2- to analyze the data, and propose a tentative hypothesis to explain the experimental observations.
The specific heat of silver is 0.235 J/g·K. Its melting point is 962°C, and its heat of fusion is 11.3 kJ/mol. What quantity of heat, in joules, is required to change 7.50 g of silver from solid at 25°C to liquid at 962°C?
Using the values for the resonance energies of benzene and naphthalene given above, explain why Diels-Alder reactions of anthracene take place at the center ring, not one of the end rings.
The molarity of a reactant in a second-order reaction falls from 0.150M to 0.130M in 30.0s What is the instantaneous rate of disappearance of the reactant at 30.0s
At 0°C, the volume coefficient of expansion of mercury is α = 18×10-5 K-1, and its coefficient of compressibility is β = 5.32×10-6 bar-1.
Rank the following titrations in order of increasing pH at the equivalence point of the titration (1 = lowest pH and 5 = highest pH).
Which of the following will react with Benedict's reagent?
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