The percentage of a stored sample of the isotope of bismuth, 83 214 Bi , that would be lost due to radioactive decay in a 551 - second period is to be stated. Concept introduction: The elements whose nucleus decays spontaneously are known as radioactive elements. The decay is accompanied by the emission of alpha particles, beta particles, and gamma rays. All the elements which have an atomic number greater than 83 are radioactive. The half life of a radioactive substance is defined as the time taken by half of its atoms to decay.

Question

3. An unknown element, X, combines with chlorine to give a substance with the formula XC14. A chlorine analysis of the substance indicates that it contains 83.47% chlorine by mass. What element is X and what is the formula of this compound? (Hint: to identify an element or compound, identify its molar mass. Remember that Molar Mass = (grams A)/(moles A). Solve for each individually and then divide them to find molar mass.)

Answer 1

Question

Chapter 20, Problem 24E

Interpretation Introduction

Interpretation:

The percentage of a stored sample of the isotope of bismuth, 83214Bi, that would be lost due to radioactive decay in a 551- second period is to be stated.

Concept introduction:

The elements whose nucleus decays spontaneously are known as radioactive elements. The decay is accompanied by the emission of alpha particles, beta particles, and gamma rays. All the elements which have an atomic number greater than 83 are radioactive. The half life of a radioactive substance is defined as the time taken by half of its atoms to decay.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Students have asked these similar questions

3. An unknown element, X, combines with chlorine to give a substance with the formula XC14. A chlorine analysis of the substance indicates that it contains 83.47% chlorine by mass. What element is X and what is the formula of this compound? (Hint: to identify an element or compound, identify its molar mass. Remember that Molar Mass = (grams A)/(moles A). Solve for each individually and then divide them to find molar mass.)

1. When hydrogen sulfide (H2S, MM = 34.08 g/mol) gas is bubbled into a solution of sodium hydroxide (NaOH, 40.00 g/mol), sodium sulfide (Na2S, 78.04 g/mol) and water (18.02 g/mol) are produced according to the balanced chemical equation shown below? H2S 2 NaOH --> Na2S 2 H₂O (a) Assuming the reaction goes to completion, how many grams of sodium sulfide are formed if 2.50g of hydrogen sulfide is bubbled into a solution containing 1.85g of NaOH? (20 pts) (b) Which reactant and how much of it remains after the reaction has been completed? (15 pts) (c) If only 0.400g of sodium sulfide was recovered, what is the percent yield of this reaction (5 pts)

The organic compound MTBE (methyltertiarybutylether) is used as a fuel additive that allows gasoline to burn more cleanly thus leading to a reduction in pollution. Recently, however, MTBE has been found in the drinking water of a number of communities. As a result several states are phasing out the use of MTBE as a fuel additive. A combustion experiment using 10.00 g of MTBE was found to produce 24.97g of CO2 and 12.26 g of H2O. (a) What is the empirical formula of MTBE assuming it contains C, H, and O only? (b) The molar mass of MTBE was experimentally determined to be 88.1 g/mol. Using this information what is the molecular formula of MTBE