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A compound contains only carbon, hydrogen, nitrogen and oxygen. Combustion of 0.341 g of the compound produced 0.533 g of CO2 and 0.150 g of H2O. In another experiment, 0.216 g of the compound produced 0.0817 g of NH3. Explain what is the empirical formula of the compound? Combustion involve reacting with excess O2. Presume that all the carbon ends up in CO2 and all the hydrogen ends up in H2O. Also presume that all the nitrogen ends up in the NH3 in the second experiment.
A certain hydrate of potassium aluminum sulfate (alum) has the formula KAl(SO4)2 x XH2O.When a hydrate sample weighing 5.459 g is heated to remove all the water, 2.583 grams of KAl(SO4)2 remains. What is the mass percent of water in the hydrate
Which of these sublevels may be utilized in constructing a partial orbital diagram for a period 3 element
Consider the following cell: Pt|H2(g, 0.645 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 1.20 V at 25 °C and the standard reduction potential of the Ag /Ag half-reaction couple is 0.80 V, calculate the hydrogen ion con..
At 1478 oC the equilibrium constant for the reaction: 2 IBr(g) ? I2(g) + Br2(g) is KP = 0.899. If the initial pressure of IBr is 0.00169 atm, what are the equilibrium partial pressures of IBr, I2, and Br2? p(IBr) = . p(I2) = . p(Br2) = .
If we pour 1.02 grams of this fusion into excess HCl solution, we will get 1120 mL of hydrogen gas. We would get the same amount of hydrogen gas if we poured 1.7 grams of our fusion into excess NaOH solution. What is the composition of this fusion
Determine how much time (in seconds) is needed to form 150. g Na from a sodium chloride melt by a 25 Ampere current?
The concentration of Mg2+ in a sample of water is 262 mmol/L At what pH will 99% of the Mg2+ be precipitated as Mg(OH)2? Ksp = 8.9 x 10-12
Ethanol (C2H5OH) has a normal boiling point of 78.4 OC. Estimate Suniverse at this 50.0 OC for the process: C2H5OH (l) ? C2H5OH (g).
A buffer solution contains 0.15 mol of propionic acid (C2H5COOH) and 0.28 mol of sodium propionate (C2H5COONa) in 1.50 L. 1.) What is the pH of this buffer?
How long does it take ( in minutes ) for light to reach Earth from the Sun, a distance of 1.596 x 10^8 km?
find the differential equation of a family of circles with center on the line y-x and passing through the
Propose a synthesis of ethyl neopentyl ether, C2H5OCH2C(CH3)3, from an alkyl bromide and any other reagents
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