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A metal has denisty 6.4g/cm3 is dropped into water upto 90.6ml the water rise 121.4 ml compute mass of metal
Calculate the pH of each of the following solutions ( Ka and Kb values are given in Appendix D in the textbook). 0.115 M hydrogen chromate ion (HCrO4^-).
Based on the sign of E°cell, classify these reactions as spontaneous or nonspontaneous as written. Assume standard conditions. Al3+(aq) + 3Na(s) ---->Al(s) +3Na+(aq) 3Fe2+(aq)+2Cr(s)---->3Fe(s)+2Cr3+(aq) Zn2+(aq) + Sn(s)---->Zn(s) + Sn2+(aq)
Assume the solubility product Mg(OH)2 is 1.7 x 10-11 at a certain temperature. What minimum OH- concentration must be attained ( for example adding NaOH) to decrease the Mg2+ concentration in a solution Mg(NO3)2 to less than 1.4 x 10-11M
When NH3 is prepared from 28 g N2 and excess H2, the theoretical yield of NH3 is 34 g. When this reaction is carried out in a given experiment, only 30. g is produced. What is the percentage yield
What is the empirical formula of this compound. If, for example, the compound was C2Cl3F, then one would input `C2Cl3F' - no spaces, no commas, proper case for the letters in the atomic symbols, and alphabetical order of the elements is required h..
Assume ^35^Cl_2_ is a harmonic oscillator( it is slightly anharmonic). If K=329 N/m compute the zero-point energy for this molecule. ^35^Cl= 34.9688g/mol.
Consider all possible transitions from the initial state to the final state of the hydrogen atom described above. Calculate all possible values of the wavelength of the emitted radiation.
An organic liquid is a mixture of methyl alcohol and ethyl alcohol. A 0.220g sample of the liquid is burned in an excess of O2(g) and yields 0.342 g CO2(g). What is the mass of methyl alcohol in the sample?
you prepare a buffer solution by dissolving 1.77 g each of benzoic acid hc7h5o2 and sodium benzoate nac7h5o2 in 900.0
Write the possible polymeric structure formed between sebacoyl chloride and butane-1,4-diamine, what is the appropriate name for this polymer
q1. how many grams of benzoic acid c6h5cooh are contained in a 75 ml solution at 0.24 m concentration?q2. what volume
A sample of a fluorocarbon gas was allowed to expand to twice its volume. In this reversible, adiabatic expansion, the temperature dropped from 298.15K to 248.44K. assuming the gas acts ideally during the expansion, estimate Cv for one mole
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