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An organic compound was synthesized & a sample of it was analyzed & found to contain only C, H, N, O, & Cl. It was observed that when a 0.150g sample of the compound was burned it produced 0.138g CO2 & 0.0556g H2O. All the nitrogen in a different 0.200g sample of the compound was converted to NH3, which was found to weigh 0.0238g. Finally the chlorine in a 0.125g sample of the compound was converted to CL and by reacting it with AgNO3, all the chlorine was recovered as the solid AgCl. The AgCl, when dried was found to weigh 0.251g. What is the empirical formula of this compound?
what is the chemical calculation to figure out the following: calculate the new molarity if the following dilution is made (assuming the volumes are additive): 25.0 mL of water is added to 10.0 mL of 0.251 M CaCl2 solution.
125 mole of oxygen gas is added to carbon in a .25L container. The mixture equilibriates at 500K. Calculate the equilibrium concentration of carbon monoxide, knowing that K=.086 at 500K. C(s) + O2(g) ----> 2CO(g)
Write the cell reaction and electrode half-reactions, and calculate the standard potential for each of the following cells: a) Pt|Fe3+(aq),Fe2+(aq)||Sn4+(aq),Sn2+(aq)|Pt
Determine how much heat is formed by this reaction if a typical packet has 250 g of Fe to warm your hands (or feet for up to 4 h) express your answer in kJ?
What concentration of this base will produce a pH of 10.13?
Ideally what should the ratio between the three slopes (AlCl3 slope= 483.0 , CaCl2 slope= 421.4, and NaCl slope= 181.9) be? What are your actual experimental ratios?
A copper wire (density = 8.96 g/cm3) has a diameter of 0.26 mm. If a sample of this copper wire has a mass of 43 g, how long is the wire?
A mixture of ethanol and 1-propanol behaves ideally at 36 C and is in equilibrium with its vapor. If the mole fraction of ethanol in the solution is 0.63, calculate its mole fraction in the vapor phase at this temperature.
As the electron in a hydrogen atom jumps from the = 3 orbit to the = 7 orbit, does it absorb energy or emit energy?
How does a sodium sulfide solution react when in contact with lead? Explain the chemistry behind this.
The sample requires 48.24 mL of 0.08893 mol/L Na2S2O3 to reach the equivalence point. Assuming that the AU3+ and Li+ ions are unreactive during the titration, determine the mass percent of LiCLO in the sample.
Explain this difference in reactivity. and which compound do you expect to be more reactive in the silver nitrate test. 1-bromo-2-methylpropane or 2-bromopropane? explain.
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