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- Gadolinium oxide, a colorless powder which absorbs carbon dioxide from the air, contains 86.76 mass % Gd. Determine The pseudoformula of the compound is ___________. Group of answer choices 1.Gd0.552O0.8275 2.Gd7O 3.Gd87O13 4.Gd0.8676O 5.Gd0.55OWhen 1 mole of the following compounds is put into water, which one will dissociate into 3 mole ions a)Cs3PO4 b)PbI2 c)H2SO4 d)NH4Cl e) Hg2I2Give an example of an ioninc compound? Describe why it is classified as an ioninc
- A 0.8780 g sample containing only NaCl and KCl was treated with AgNO3. The AgClformed had a mass of 1.913 g. Calculate the %Na and %K in the sample. (Na=22.9897,Cl=35.453, K=39.0983, Ag=107.868, N=14.0067, O=15.9994)A 0.7336-g sample of an alloy that contains copper and zinc is dissolved in 8 M HCl and diluted to 100 mL in a volumetric flask. In one analysis, the zinc (At. Mass = 65.38 g/mol) in a 25.00-mL portion of the solution is precipitated as ZnNH4PO4, and isolated as Zn2P2O7 (FM = 304.70g/mol), yielding 0.1163 g. The copper (At. Mass = 63.55 g/mol) in a separate 25.00-mL portion of the solution is treated to precipitate CuSCN (121.63 g/mol), yielding 0.2383 g. Calculate the %w/w Zn and the %w/w Cu in the sample.1. Determine the percentage of hydrogen peroxide in the solution sample. 2. naturally occurring manganese consists of only the Mn55 isotope. determine the moles of the manganese sulphate in the product solution, then calculate the totally number of neutrons present in all the manganese ions in the final solution.
- Name each compound: Ca(NO3)2, N2O, NaS, CrCl3. Foreach compound, include a detailed step-by-step descriptionof the process you used to determine the name. (Tip:Each group member could name one compound and presentit to the whole group.)What is efflorescence? Give an example?compound name of MnCl2·2 H2O
- Give the systematic name of the compound:Given the information pictured, The reaction of B and of F with C is common in organolithium chemistry. What name is generally given to this type of reaction?how would one devise in carry out an experiment to determine which one of these compounds is the unknown?