# Isotopic abundance Calculation and Limiting reactions worksheet: 1.Naturally occurring magnesium has three isotopes with 12,13,14 and neutrons. Determine the mass numbers and write the symbols of thes

Isotopic opulence Calculation and Limiting reactions worksheet:

1.Naturally occurring magnesium has three isotopes succeeding a while 12,13,14 and neutrons. Determine the concretion aggregate and transcribe the symbols of these three isotopes.

2.Hydrazine is tight of 87.42% nitrogen and 12.58% hydrogen by concretion. Its exemplificationally determined molar concretion is 32.05 g/mol. Determine the exemplificational and molecular formulas of hydrazine.

Ans: Experimental Formula: NH3; Molecular Formula: N2H6.

3.A 63.47 g specimen of an ionic unification contains 17.17 g sodium and 10.46 g nitrogen; the repose is oxygen. The unification’s molar concretion is 84.99 g/mol. Determine its formula. Ans: NaNO3.

Here Concretion of Oxygen is not ardent. Thus, we can experience as underneath and other way is undesigning as we did in other problems.

4.Write the balanced equation for the reaction that occurs when 23 grams of hearty (II) chloride is partial succeeding a while 41 grams of sodium phosphate forming hearty (II) phosphate and sodium chloride. If 16.1grams of sodium chloride are formed in the reaction, what is the percent concede of this reaction?

FeCl2 Na3PO4 →

5.Silver nitrate, AgNO3, reacts succeeding a while ferric chloride, FeCl3, to surrender silver chloride, AgCl, and ferric nitrate, Fe(NO3)3. In a detail exemplification, it was plannned to mix a key containing 25.0 g of AgNO3 succeeding a while another key containing 45.0 grams of FeCl3.

a.

a) Transcribe the chemical equation for the reaction.

b) Which reactant is the limiting reactant?

c) What is the consummation estimate of moles of AgCl that could be obtained from this combination?

d) What is the consummation estimate of grams of AgCl that could be obtained?

e) How sundry grams of the reactant in advance gain tarry succeeding the reaction is balance?