S Calculate the number of moles of INO, ions in 30 5 6. by Lactic acid, a contai

Question

S Calculate the number of moles of INO, ions in 30 5 6. by Lactic acid, a contai e acid, a substance made by the body during exercise. ns 40.0% C, 671 % H, and 53.3% O. Determine the molar mass is 900 molecular formula of this compourd if its &/mol. 7. A compound was known to contain only C, H, and O. When 1.00 g was burned in a of CO2 and 0.41 g of HO were produced. combustion analysis experiment, 1.50 g la of this compound. What is the empirical 8. Calculate the mass of oxygen in 30.0 moles of oxalic acid dihydrate, H2C204.2H2O.

Explanation / Answer

Solution :

5.first we have 2 number of moles of NO3 per one mole of Pb(NO3)2.

Here given 30.5 moles of Pb(NO3)2

So moles of nitrate ion is (30.5)(2)= 70 moles.

Therefore required moles of nitrate ions present in 30.5 moles of Pb(NO3)2 is 70 moles.

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