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a.) Molar mass #"Pb(NO"_3)_2"#. In order to calculate the molar mass of a compound, multiply the subscript of each element by its molar mass (atomic weight on the periodic table in g/mol). No subscript is understood to be #1#. If you have a polyatomic ion inside parentheses, multiply the subscript outside the parentheses by the subscript of ...
The molar mass of oxygen is 15.9994- since there are 8 atoms, you multiply this number by 8. The calculation would be: 207.2+(32.07x2)+(15.9994x8)=399.3352 Keep in mind that different versions of the period table of elements will use different molar masses for each element, so the answer may be off by a 0.01, or 0.001, etc, etc.
Lead. The chemical symbol Pb stands for the Latin plumbum and represents the element lead. It's in column IVA and row 6. Its atomic number is 82.
Answer to 2. Calculate the moles of Pb(NO3)2 and KI, record in. 2. Calculate the moles of Pb(NO3)2 and KI, record in the result table 2 above.
The molar mass of Pb (NO 3) 2 is 331.2098 g/mol. Let's break this compound down into its constituents, and multiply their molar masses by the quantity... See full answer below.
Calculate the molar mass of PbSO4 from the molar atomic masses. Give your answer to four significant figures. Molar atomic masses (g/mol) H 1 с 12 0 16 Na 23 P 31 S 32.07 CI 35.5 K 39.1 Ca 40.08 Cr 52 Mn 55 Fe 55.85 Co 58.9 Cu 63.55 Ag 107.9 Ba 137.3 Pb 207.2 g/mol Calculate the moles of carbon dioxide that are released when 48.7 g of calcium carbonate (molar mass100,0 g/mol) is heated ...
Become a Study.com member to unlock this answer! Create your account. View this answer. Molar mass is PbI 2 is 461.00894 g/mol. Lead's molar mass is 207.2 g/mol. Iodine's molar mass is 126.90447 g/mol, and we multiply this by 2. (2) (126.9... See full answer below.
Calculate the molar mass of Pb(Cr2O7)2. Calculate the molar mass of the following: 1. Na_2SO_4 \cdot 10H_2O(s) \\2. CaSO_4 \cdot 2H_2O(s) Calculate the molar mass of a compound if 0.457 moles of it has a mass of 223 grams. Calculate the molar mass of AgF. Calculate the molar mass of NaNH2. Calculate the molar mass of Ca3(PO4)2.
Chemistry expert. Molar mass of a compound is the sum of the molar mass of it's constituent elements. Molar mass of P …. What is the molar mass for Pb (NO3)2? Do not include units with your numerical answer.
145 g of Pb (4.22 x 10^23)/ (6.022 x10^23)= .7008 mol Pb .7008mol Pb (207.2 g/(mol))=145.198 The answer is significant to three digits so rounded this would be 145 g Pb We divide by Avogadro's number in the first step since per mole there are 6.022x10^23 atoms then from mols use the molar mass of lead to find how many grams of lead