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Calculate the number of moles of ions present in 58.5 g of a solution that is 8.68% Fe2(SO4)3 by mass. a) There are 0.0635 moles of ions in this solution. b) There are 0.0127 moles of ions in this solution. c) There are 0.731 moles of ions in this solution. d) There are 0.146 moles of ions in this solution. e) There are 0.00254 moles of ions in this solution.
Since the periodic table currently has 7 periods (and will have 7 until element 119, which will be the first element of the 8th period, is "discovered"), consider the electron shell with principle quantum number, n = 7.
A system that had work done on it but which receives or loses no heat from or to the surroundings has
If 2.45 g of X reacts with 6.55 g of M to produce 11.25 g of a compound with the formula M2X3, and the atomic mass of M is 42.0 amu, what is the atomic mass of X
A CD player and its battery together do 500 kJ of work, and the battery also releases 250 kJ of energy as heat and the CD player releases 50 kJ as heat due to friction from spinning
A reactant R is being consumed in a first-order reaction. What fraction of the initial R is consumed in 4.0 half-lives
Why is toxicity diminished in other congeners where chlorines are removed from the 2,3,7,8 positions, or when chlorines are added to remaining positions on the rings?
Calculate the molarity of the 25.0 mL sample of 0.100 acetic acid which was diluted with 25.00 mL H2O
Explain why C-H single bond stretching is observed in the functional group (higher energy) region of the IR, but the absorptions corresponding to other single bond stretching vibrations
A 75.0-mL volume of 0.200 NH3 is titrated with 0.500 M HNO3 . Calculate the pH after the addition of 19.0 mL of HNO3
Find out the eq molar concentration of SCN- in the system.( Kc=[FeNCS2+]/[Fe3+][SCN-] =271.5)
The work performed by a system against the atmospheric pressure to which it is kept open during an experiment in the lab is equal to.
Find the number of moles of water that can be formed if you have 150mol of hydrogen gas and 70mol
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