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Express the concentration of a 0.0260 M aqueous solutioin of fluorire, F-, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL.
If you consider an orange LED and create a set of energy levels (i.e. the energy level diagram of a semiconductor) that is consistent with the observed spectrum of the diode,
if 0.200mole of NaOH is added to 1 liter of solution that is 0.100M in aqueous ammonia and 0.200M in ammonium chloride how much does the Ph change.
Draw the resonance structures for 9-(hydroxymethyl)anthracene. Is it possible for all three rings to simultaneously have benzenoid character
A gas mixture is made by combining 7.2g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 92.04L. What is the molar mass of the unknown gas in g/mol, and identify the unknown gas
Draw complete lewis structure of condensed structural formula. (CH3)3(3 is a subscript)CCOCHCH2
Consider the following compounds and suppose that 0.5M solutions are prepared of each:Nal, NH4Br, KF, KCN, KC2H3O2, CsNO3, and KBr. Write the formulas of those that have solutions that are A) acidic B)basic and C) Neutral
When a 3.25 g sample of solid sodium hydroxide was dissolved in a calorimeter in 100.0 g of water, the temperature rose from 23.9 °C to 32.0 °C. Calculate ?H (in kJ/mol) for the solution process: NaOH (s) → Na+ (aq) + OH- (aq)
A sea water has a density of 1.025g/ml.if sea water is about 1.45% cl by mass, how much .1M silver nitrate is needed to titrate a 5 ml sample
Which of the following processes listed below represents the experiment for measureing an ionization energy?(E--> represents a nuetral element, "m"- represents a metal cation; and X represents a nonmental anion)
When two atoms of 2H (deuterium) are fused to form one atom of 4He (helium), the total energy evolved is 3.83 × 10-12 joules. What is the total change in mass
Can someone explain to me what is metastability, what does it mean. If you could, can it also be explained in terms of geology
At high temperature, cyclopropane is converted to propene, the materialfrom which polypropylene plastics are made. The reactionwas monitored and the data below was collected:
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