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A 0.440 g sample of butyric acid (an organic acid consisting of C, H, and O atoms) is combusted in excess oxygen, yielding 0.882 g CO2 and 0.360 g H2O. What is the empirical formula for butyric acid?
How many grams of water can be cooled from 36 degrees celsius to 23 degrees celsius by the evaporation of 53g of water.
The Party Guy, Mr. Balloon, is making animal figures out of long thin balloons that he twists into different shapes. Assume that the balloons are of uniform thickness.
Determine the partial pressure of each gas in a mixture of gases using Dalton's law of partial pressures
The dipole moment and the normal boiling point of acetaldehyde (CH3CHO) are 2.7 D and 293 K, respectively. The dipole moment and the normal boiling point of n-octane (C8H18) are 0 D and 298 K.
If 95.0 mg of fluorine-18 is shipped at 8:00 a.m., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 p.m.
A volume of 10.0 mL of a .00300 M solution of Cl- ions are reacted with .500 M solution of AgNO3-. What is the maximum mass of AgCl that precipitates in grams.
What mass of natural gas (CH4) must burn to emit 470. kJ of heat? CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g).
Table salt (NaCl) and sugar (C12H22O11) are accidentally mixed A 5.00g sample is burned and 2.20-g of CO2 are produced. What is the mass percentage of the table salt in the mixture.
Show that the balanced equation obeys the law of conservation of mass.
Which graduated cylinder would have the greatest volume change if equal masses of Au and Pt are transferred to equal volumes of H2O in separate graduated cylinders? Density of gold = 19.31 g/cm3 , density of platinum =21.43 g/cm3
A mixture of twenty five grams of potassium nitrate(KNO3) and two grams of CuSO4*5H20 with 11.5 grams of water at 100 degree celcius temperature, 15 g ramsof water are mixed.
How many metric tons of 5%-S coal would be needed to yield the H2SO4 required to produce a 2.5-cm rainfall of pH 2.00 over an area of 100 square kilometers?
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