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Cu2+ + Ag D) CH4 + O2 CO2 + H2O E) both A and B 23. Draw a Lewis structure for H3C--NO2. Both oxygen atoms are directly attached to the nitrogen atom. What is the formal charge on the nitrogen atom? A) -3 B) +1 C) +3 D) -1 E) 0 24. A 55.25 gallon container was filled with an industrial solvent whose density is 1.146 g/cm3. How many kg should the solvent in the container weigh? 26. Which statement below is true about the spectrum of hydrogen obtained in gas discharge tubes experiments?
A) A photon is absorbed as the electron goes from a state with a higher energy to one with a lower energy.
B) A photon is absorbed as the electron goes from a state with a lower energy to one with a higher energy.
C) A photon is emitted as the electron goes from a state with a higher energy to one with a lower energy.
D) A photon is emitted as the electron goes from a state with a lower energy to one with a higher energy.
E) An electron is emitted as the photon goes from a state with a higher e
An empty beaker has a mass of 38.112 g. 10.00 mL of ethyl alcohol are placed in thte beaker and the mass of the beaker with ethanol is found to be 45.268 g
Carbon disulfide is a foul-smelling solvent that dissolves sulfur and other nonpolar substances. It can be made by heating sulfur in an atmosphere of methane.
Assume that a pure molecule has a specific rotation of -20 degree. An impure sample of both enantiomers gave a rotation of -4 degree. What is the ratio of (-) molecules to (+) molecules in the latter sample. Details for explanation please! thanks ..
calculate [OH-] and pH in a solution in which dihydrogen phosphate ion, H2PO4- is 0.335M and hydrogen phosphate ion, HPO4^(2-) is a)0.335M b)0.100M
A student heated 1.0L of ethanol (density 0.789 g/L) with 1.0 mL ethanoic acid (density 1.049 g/mL) with a sulfiric acid catalyst and noticed a vinegar-like smell to the product as well as a fruity medicinal smell.
You take 306.5 g of a solid at 30.0 C and let it melt in 400. g of water. The water temperature decreases from 85.1 C to 30.0 C. Calculate the heat of fusion of this solid.
Calculate the equilibrium pH of a solution containing 5x10^-4 M Na2CO3 and 5X10^-4 M NaHCO3.
What was the calculated PH value obtained for the reaction NH3 + HCl -› NH4Cl using the thermodynamic data NaOH (aq) + HCl (aq)--> H2O(l) +NaCl (aq) NaOH (aq) + NH4Cl(aq)---> NH3 + NaCl + H2O(l) NH4Cl 2M 20ml NH4OH 2M 10ml HCL 2M 20ml NaOH 2M 20ml
A lungful of air (500 mL) contains 4.1% CO2 by volume. How many grams of KO2(s) is needed to remove the CO2 from a lungful of air at STP according to the following reaction?
Based on the given chemical equation, how many grams of aluminum are needed to react with 0.6 moles of hydrochloric acid? Al + HCl yields AlCl3 + H2
explain why one would be higher than the other? I'm confused as to the theory of this lab and need to know exactly why...Thanks! I have this lab next week and can't unnderstand what the concept is.
Indicate the concentration of each of ion present in the solution formed by mixing
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