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If the pressure of a gas sample is quadrupled and the absolute temperature is doubled, by what factor does the volume of the sample change?
Determine the final temperature of a gold nugget (mass = 376g) that starts at 398 K and looses 4.85 kj of heat to a snowbankwhen it is lost. The specific heat capacity of gold is 0.128J/g.
A student weighs 0.2254g of sodium chloride for chloridedetermination. Calculate the millimoles of silver nitrate requiredto precipitate the chloride. Then estimate the volume of 0.1 Msilver nitrate
A 0.4268 gram sample of a a potassium hydroxide-lithium hydroxidemixture requires 30.88 mL of 0.3535 M HCl for its titration to the equivalence point.
A solution containing 0.200 MNH3 and 0.020 M NH4Cl was diluted with water in the proportions shown below (volume solution : volumewater).
A mono methyl-substituted 1-naphthol is allowed to couple with a diazonium prepared from a mono-substituted hydroxyaniline. How many different coupling products can be obtained assuming all patterns
MTBE is a fuel addictive for gasoline to boost the octanerating. It increases the oxygen content which reduces CO emmissionsto an acceptable level determined by the clean air act.
A student collectedhydrogen gas in a buret by displacing water at 26.0C. the buretcould not be submerged deep enough in a water bath to equilaize the pressure.
Determine the final temperature of a gold nugget (mass=376g)that starts at 398 K and losses 4.85 kj of heat to a snowbank whenit is lost. The specific heat capacity of gold is 0.128 J/gC.
For the reaction: CO(g) + Cl2 = COCl2(g) at aparticular temperature K= 6.66e-12, when all concentration areexpressed in mol /L. Pure COCl2 is added to 1L flask. Atequilibrium, it is found that .25 m
The solution is titrated with 9.7 mL of 0.09 M NaOH to a faint pink endpoint. If an entire tablet of this antacid has a mass of 1.37 g, how many moles of HCl will be neutralized by one tablet of th
How many grams of aluminum oxide are produce according to there action below given that you start with 10.0g of Al and 19.0grams of O2?
Argon, copper, sodium chloride, and carbon dioxide all crystallize in the face centered cubic (fcc) structure. How can this be when their physical properties are so different?
A container contains oxygen, neon and helium whose partial pressures are 100 torr, 300 torr and 200 torr respectively. What is the mole fraction of neon?
Pure nitrogen gas effuses at the rate of 0.311 cm/min while anunknown gas effuses at the rate of 0.133 cm/min under the sameconditions. What is the molecular weight of this(unknown) gas?
When 100 mL of an aqueous solution containing 1.0 g of caffeine isextracted with 10 mL of chloroform at room temperature, 0.5 g of caffeine is transferred to the chloroform layer.
When reducing a ketone to an alcohol in a lab, why do we have toadd sodium borohydride little by little under ice water? Also, whenoxidizing an alcohol to ketone, why do we add glacial acetic acid b
An infinitely sharp zone of solute is placed at the center of acolumn at time t=0. After diffusion for time t1, the standarddeviation of the Gaussian band is 1.0mm. After 20 minutesmore, at time t2,
Write a Structural formula for a molecule containing three carbonatoms that represent ans alcohol, an organic acid, and anester.
This solution has an osmotic pressure of 2.50 atm at 25 degrees Celsius. If each molecule of the solute dissociates into two particles (in this solvent), what is the molar mass of this solute?
The nutritional calorie (Calorie) is equivalent to 1 kcal. Onepound of body fat is equivalent to about 4.1 multiplied by 103Calories. If an athlete expends 1720.kJ/h, how long does she have to play
The balanced equation for the reaction of magnesium metal withaqueous hydrochloric acid is Mg(s) + 2HCl(aq) -> H2(g) +MgCl2(aq). If 0.037 gram of magnesium are reacted with excess HCl,how many mo
Calculate the freezing point and the boiling point of a solution prepared by dissolving 5.0 g of KClin 550 g of water. kf and kb for water are1.86 ºC/m and 0.51 ºC/m, respectively..
You are given 84.27241 g of a substance initially at 293.89622K. It is heated first to its freezing point, 357.72232 K, andthen to its boiling point, 496.31828 K. The heat capacity of the solid form
When a salt like magnesiumnitrate is dissolved in water it dissociates. if six moles of magnesium nitrate are dissolvd how many moles of nitrate ions would be in the solution?