You are dating Moon rocks based on their proportions of uranium-238 (half-life of about 4.5 billion...
You are dating Moon rocks based on their proportions of uranium-238 (half-life of about 4.5 billion years) and its ultimate decay product, lead.
a)Find the age for a rock for which you determine that 59% of the original uranium-238 remains, while the other 41% has decayed into lead.
b)Find the age for a rock for which you determine that 71% of the original uranium-238 remains, while the other 29% has decayed into lead.
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You are dating Moon rocks based on their proportions of
uranium-238 (half-life of about 4.5 billion...
Meihui is at NASA analyzing Moon rocks. In one of the rocks from the lunar highlands,...
Meihui is at NASA analyzing Moon rocks. In one of the rocks from the lunar highlands, he discovered 37 % of the original uranium-238 remains, while remaining amount of uranium-238 had decayed into lead. The half life of uranium-238 is 4.5 × 109 years. Assume the only decay product is lead. How old is the lunar maria rock in billions of years (109 years)?
Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in...
Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years. A rock is found to contain 82.4% of the amount of uranium-238 that it contained when it was formed. (The amount that the rock contained when it was formed can be deduced from the presence of the decay products of U−238.) How old is the rock?
Applications of radioactive decay extend beyond potential terrorism. There are a number of regularly used practical...
Applications of radioactive decay extend beyond potential terrorism. There are a number of regularly used practical applications. One such application is to use radioactive decay as a mechanism for determining the age of a sample of bones, rocks, meteorites, etc. Say you area scientist tasked with analyzing samples of moon rocks. Your moon rock contains small amounts of Uranium-238. U-238 decays into lead-206 with a half-life of 4.5 billion years. How old is your rock if 55.0% of the original...
Determine the age of a rock containing 0.065 g of uranium-238 (112 = 4.5 x 10°...
Determine the age of a rock containing 0.065 g of uranium-238 (112 = 4.5 x 10° yr) and 0.046 g of lead–206. (Assume all the lead-206 came from 238U decay.) Enter your answer in scientific notation. x 10 years old
Determine the age of a rock containing 0.065 g of uranium-238 (t12 = 4.5 x 10°yr)...
Determine the age of a rock containing 0.065 g of uranium-238 (t12 = 4.5 x 10°yr) and 0.043 g of lead-206. (Assume all the lead-206 came from 238U decay.) Enter your answer in scientific notation. 2 68 x 10 irs old h
Can someone help me with number 3 of my pchem homework? Uranium-lead dating is an important...
Can
someone help me with number 3 of my pchem homework?
Uranium-lead dating is an important technique for determining the age of rocks that formed from about million years to over 4.5 billion years ago with routine precisions in the 0.1-1 percent range (according to Wikipedia). Uranium-235 decays according to actinium series: 235U207 Pb+7a +4B with a rate constant of 0.00097626 mition years I.) Determine the order, rate law, and integrated rate law for this decay process. 2. Determine the...
9 Question (1 point) See page 978 Uranium-lead (U-Pb) dating of geological samples is one of...
9 Question (1 point) See page 978 Uranium-lead (U-Pb) dating of geological samples is one of the oldest and most refined radiometric dating methods, able to determine ages of about 1 million years to over 4.5 billion years with precision in the 0.1-1% range. The U-Pb dating method relies on two separate decay chains, one of which is the uranium series from 238 to 206Pb, with a half-life of 4.47 billion years. 5th attempt w See Periodic Table See Hint...
A decomposition reaction has a half-life that is directly proportional to the initial concentration of the...
A decomposition reaction has a half-life that is directly proportional to the initial concentration of the reactant. What is the order of the reaction? Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years. A rock is found to contain 83.4% of the amount of uranium-238 that it contained when it was formed. (The amount that...
Uranium-lead (U-Pb) dating of geological samples is one of the oldest and most refined radiometric dating...
Uranium-lead (U-Pb) dating of geological samples is one of the oldest and most refined radiometric dating methods, able to determine ages of about 1 million years to over 4.5 billion years with precision in the 0.1–1% range. The U-Pb dating method relies on two separate decay chains, one of which is the uranium series from 238U to 206Pb, with a half-life of 4.47 billion years. Geologists unearth a sample of zircon that appears to be a closed system. They find...
Uranium-lead (U-Pb) dating of geological samples is one of the oldest and most refined radiometric dating...
Uranium-lead (U-Pb) dating of geological samples is one of the oldest and most refined radiometric dating methods, able to determine ages of about 1 million years to over 4.5 billion years with precision in the 0.1–1% range. The U-Pb dating method relies on two separate decay chains, one of which is the uranium series from 238U to 206Pb, with a half-life of 4.47 billion years. Geologists unearth a sample of zircon that appears to be a closed system. They find...
Determine the age of a rock containing 0.065 g of uranium-238 (112 = 4.5 x 10° yr) and 0.046 g of lead–206. (Assume all the lead-206 came from 238U decay.) Enter your answer in scientific notation. x 10 years old
Determine the age of a rock containing 0.065 g of uranium-238 (t12 = 4.5 x 10°yr) and 0.043 g of lead-206. (Assume all the lead-206 came from 238U decay.) Enter your answer in scientific notation. 2 68 x 10 irs old h
Can
someone help me with number 3 of my pchem homework?
Uranium-lead dating is an important technique for determining the age of rocks that formed from about million years to over 4.5 billion years ago with routine precisions in the 0.1-1 percent range (according to Wikipedia). Uranium-235 decays according to actinium series: 235U207 Pb+7a +4B with a rate constant of 0.00097626 mition years I.) Determine the order, rate law, and integrated rate law for this decay process. 2. Determine the...
9 Question (1 point) See page 978 Uranium-lead (U-Pb) dating of geological samples is one of the oldest and most refined radiometric dating methods, able to determine ages of about 1 million years to over 4.5 billion years with precision in the 0.1-1% range. The U-Pb dating method relies on two separate decay chains, one of which is the uranium series from 238 to 206Pb, with a half-life of 4.47 billion years. 5th attempt w See Periodic Table See Hint...
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