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- Chemical Formulas Determine the number of each type of atom in each chemical formula: a.CaF2b.CH2Cl2c.MgSO4d.Sr(NO3)2detrimine the number of atoms in 21.0 grams of vanadium, V.Suppose that a semiconductor device is using a 10.63-mg sample of a hypothetical element By, that is doped with 1 % (by mole) of another hypothetical element Do. How many Do atoms are in the sample? Atomic Mass: By: 33.336 g/mol Do: 86.041 g/mol Please round your answer to 2 decimal places.
- Refer to the nomenclature flowchart (Figure 3.11) to name each compound.a. HNO2(aq) b. B2Cl2 c. BaCl2 d. CrCl3Calculate the mass in grams of positive ions and negative ions contained in 1mol of each compound given in Exercise 4.38.2.37 Why are empirical formulas preferred for describing polymer molecules?
- What number of molecules (or formula units) are present in 1.00 g of each of the compounds in Exercise 52?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.Gd0.55OBromine monochloride is formed from the elements:Cl₂(g) +Br₂(g) ⇌2BrCl(g) ΔH°ᵣₙₓ =-1.35 kJ/mol ΔG°(f)=-0.88 kJ/molCalculate (a) ΔH°(f) and (b) S° of BrCl(g).
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