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Classify the following bonds as ionic, polar covalent, or nonpolar covalent. Show your calculations.
a. Se-Clb. Al-Clc. K-Fd. Cl-Cl
Sulfur, S8, combines with oxygen at elevated temperatures to form sulfur dioxide. If 288 oxygen molecules are used up in this reaction, how many sulfur molecules reacted. In the reaction above, how many molecules of sulfur dioxide were formed.
An amount of H2O vapor (gas) is condensed isothermally and reversibly to liquid water at 100ºC where it occupied a volume of 838 cm3. The standard enthalpy of vaporization of water at 100ºC is 40.66 kJ mol-1, the density of liquid water at 100ºC i..
what is the heat flow of hot water added to cold water? What is the heat flow of the cold water? hot water was 52.5 C the cold water was 21.7 C the final temperature was mass of cold water was 49.35g
a copper wire density 8.96 gcm3 has a diameter of 0.50 mm. if a sample of this copper wire has a mass of 48 g how long
Calculate the wavelength of each of the following frequencies of electromagnetic radiation. 1105 kHz (typical frequency for AM radio broadcasting) (assume four significant figures)
The most common source of copper (rm Cu) is the mineral chalcopyrite (rm CuFeS_2). How many kilograms of chalcopyrite must be mined to obtain 230. g of pure rm Cu?
Biphenyl is an organic compound that melts at 68.50?C and has a Kfp = 8.00?C/m. If 30.0 mg of lysine and 1.200g of biphenyl has an observed freezing point of 66.13?C, what is the molecular mass of lysine
Calculate the mass in grams of calcium bromide the chemist has added to the flask. Round your answer to 3 significant digits.
A paint company mixes it's paint with water to create more paint per gallon. They currently have ten gallon jugs which contain 10% water.
how many grams of calcium hydroxide will be needed to react with 10.0g of phosphate acid(h3PO4). how many grams of calcium phosphate will form?
A solution containing 6.3 X a0^-8 M benzene and 2.0 X 10^-7 M cyclohexane gave peal areas of 3950 and 4870, respectively, in a GC experiment.
Calculate the molarity of a 5.72 m aqueous sucrose (C12H22O11) solution with a density of 1.50 g/mL.
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