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A 0.158 g sample of a compound containing the elements carbon, hydrogen, oxygen, and sulphur was burned completely, yielding 0.110 g CO2 and 0.0677 g H2O. In a separate experiment, all the sulphur in another 0.158 g sample was converted to 0.292 g of BaSO4. What is the empirical formula of the unknown compound?
the kinetic energy of a rolling billiard ball is given by rmke 12mv2 . suppose a 0.17-rm kg billiard ball is rolling
Is the neutralization reaction between ammonia and hydrochloric acid exothermic or endothermic? Explain your answer.
the molar heat capacity of ethane is represented in the temperature range of 298k to 400k by the empirical expression
The student then took 100 ml of the Mg(OH)2 solution and reacted with HCl(aq). If 13.75 ml of .010M HCL reacted with the OH-(aq), what was the concentration of hydroxide ion in the 100ml solution?
The isomerization of cyclopropane follows first order kinetics. The rate constant at 700 K is 6.20*10^-4 min-1, and the half life at 760 K is 29 min. Calculate the activation energy for this reaction.
When the valve between the 2.00-L bulb, in which the gas pressure is 2.00 atm, and the 3.00-L bulb, in which the gas pressure is 4.50 atm, is opened, what will be the final pressure in the two bulbs?
How many mole of hydrogen gas can be liberated from 85.5 moles of magnesium hydride if the process operates at 80% efficiency
When 2-chloro-2-methylbutane is treated with a variety of strong bases, the products always seem contain two isomers (A and B) of formula C5H10.
Can a firm be effective but inefficient? Very efficient but essentially ineffective? Both? Neither?
calculate the molarity and mole fraction of acetone in a 1.82 molality solution of acetone in ethanol. density of
0.134 mole of kcl and 0.248 mole of cacl2 were dissolved in water. calculate the total number of moles of cl- ions in the solution.
Suppose if you mix 20.50mL of a 0.393 M solution of K2CrO4 with 20.50mL of a 0.393 M solution of AgNO3, explain what mass of solid will form
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