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The combustion of 135mg of a hydrocarbon produces 440mg of CO2 and 135mg of of H2O. The molar mass of the hydrocarbon is 270 g/mol. Determine the molecular formula of this compound ?
A lab student analyzed a nickel-en complex for ethylenediamine, en, content. A 0.353g sample of the synthesized Ni-en complex was dissolved in about 50 mL of water and titrated with 0.165 M HCl (aq). Endpoint required 36.40 mL of the HCl (aq)
A sample of pure calcium fluoride with a mass of 15.0 g contains 7.70 g of calcium. How much calcium is contained in 45.0 g of calcium fluoride
The chemical equation for the standard free energy of formation for KBr, CH3Cl, H2S and Pcl5
Describe the preparation of 1.5L of a 0.10M Ca(C2H3O2)2 solution. How many milliliters of the above solution would be needed to prepare 500mL of a 0.025M solution
Problem- Consider two cells, the first with Al and Ag electrodes, and the second with Zn and Ni electrodes, each in appropriate 1.00 M solutions of their ions. A) If connected as voltaic cells in series, which two metals are plated, and what is the..
Question- Methan gas can be made from carbon monoxide and hydrogen gases according to the equation 2CO(g) + 2 H2 -> CO2(g) +CH4(g), What mass of CO is required to produce 8.75 x 10 25 molecules of CH4(g) explain
What is the molar mass of toluene if 0.85 g of toluene depresses the freezing point of 100. g of benzene by 0.47°C. Kf of benzene is 5.12°C/m.
Problem- Determine [H3O+] in each acid solutions. If the acid is weak, indicate the value that [H3O+] is less than.
Study the structures of the chlorophylls and carotenoids and predict the relative polarity of each set of pigments below
Explain What is meant by industrial nitrogen fixation. What is produced during this process
Hired as a senior research associate at a biotech company. Your first task is to identify differentially expressed genes in two strains of chimpanzee. You have a choice between 2D-differential gel electrophoresis and Nucleic Acid-Programmable ..
Question- For the substituent in this experiment that was found to be least activating, explain why Bromination took place at the position on the ring indicated by the experimental results
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