If a sample of U−238 initially contained 1.1×1018 atoms when the universe was formed 13.8 billion...

Question

Question

If a sample of U−238 initially contained 1.1×10¹⁸ atoms when the universe was formed 13.8 billion years ago, how many U−238 atoms will it contain today?

science chemistry

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Jedution Since U-Z2ts dioative elementet/ illoul fbl oveler imtis 02 cind 一七一 (*) yeons 4.5 3-6 /8 8:37

Add a comment

Answer 2

Similar Homework Help Questions

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of...

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of initial concentration. Part A How long will it take for 20% of the U−238 atoms in a sample of U−238 to decay? Express your answer using two significant figures. Part B If a sample of U−238 initially contained 1.5×1018 atoms when the universe was formed 13.8 billion years ago, how many U−238 atoms will it contain today? Express your answer using two significant figures.
The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of...

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of initial concentration. 1.How long will it take for 10% of the U−238 atoms in a sample of U−238 to decay? 2.If a sample of U−238 initially contained 1.9×1018 atoms when the universe was formed 13.8 billion years ago, how many U−238 atoms will it contain today?
If a sample of U−238U−238 initially contained 1.8×1018 atoms and was formed 5.6 billion years ago,...

If a sample of U−238U−238 initially contained 1.8×1018 atoms and was formed 5.6 billion years ago, how many U−238U−238 atoms does it contain today?

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of...

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of initial concentration. If a sample of U−238 initially contained 1.2×1018 atoms and was formed 6.3 billion years ago, how many U−238 atoms does it contain today? Express your answer using two significant figures.
The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of...

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of initial concentration. a) How long will it take for 17 % of the U−238 atoms in a sample of U−238 to decay? Express your answer using two significant figures and in yrs b) If a sample of U−238 initially contained 1.8×1018 atoms and was formed 4.9 billion years ago, how many U−238 atoms does it contain today? Express your answer using two significant figures.
The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of...

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of initial concentration. Part A How long will it take for 14 % of the U−238 atoms in a sample of U−238 to decay? Express your answer using two significant figures. Part B If a sample of U−238 initially contained 1.4×1018 atoms and was formed 5.7 billion years ago, how many U−238 atoms does it contain today? Express your answer using two significant figures.

Halflife = 4.5 billion years Part B If a sample of U-238 initially contained 1.9x1018 atoms...

Halflife = 4.5 billion years Part B If a sample of U-238 initially contained 1.9x1018 atoms and was formed 3.8 billion years ago, how many U-238 atoms does it contain today? Express your answer using two significant figures. V AXO O ? atoms Submit Request Answer < Return to Assignment Provide Feedback
How long will it take for 18 %% of the U−238U−238 atoms in a sample of...

How long will it take for 18 %% of the U−238U−238 atoms in a sample of U−238U−238 to decay? Express your answer using two significant figures.
If a sample of C-14 initially contains 1.4 mmol of C-14, how many millimoles will be...

If a sample of C-14 initially contains 1.4 mmol of C-14, how many millimoles will be left after 2275 years? Express your answer in millimoles using two significant figures. Note: The half-life for the radioactive decay of C-14 is 5730 years.

The barium isotope 133Ba has a half-life of 10.5 years. A sample begins with 1.1×1010 133Ba...

The barium isotope 133Ba has a half-life of 10.5 years. A sample begins with 1.1×1010 133Ba atoms. How many are 133Ba atoms left in the sample after 4 years. Express your answer using two significant figures. How many are 133Ba atoms left in the sample after 30 years. Express your answer using two significant figures. How many are 133Ba atoms left in the sample after 190 years. Express your answer using two significant figures.

If a sample of U−238 initially contained 1.1×1018 atoms when the universe was formed 13.8 billion...

Homework Answers

Add Answer to:
If a sample of U−238 initially contained 1.1×1018 atoms when the universe was formed 13.8 billion...

Post as a guest

Earn Coins

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of...

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of...

If a sample of U−238U−238 initially contained 1.8×1018 atoms and was formed 5.6 billion years ago,...

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of...

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of...

The half-life for the radioactive decay of U−238 is 4.5 billion years and is independent of...

Halflife = 4.5 billion years Part B If a sample of U-238 initially contained 1.9x1018 atoms...

How long will it take for 18 %% of the U−238U−238 atoms in a sample of...

If a sample of C-14 initially contains 1.4 mmol of C-14, how many millimoles will be...

The barium isotope 133Ba has a half-life of 10.5 years. A sample begins with 1.1×1010 133Ba...

If a sample of U−238 initially contained 1.1×1018 atoms when the universe was formed 13.8 billion...

Homework Answers

Add Answer to: If a sample of U−238 initially contained 1.1×1018 atoms when the universe was formed 13.8 billion...

Post as a guest

Earn Coins

Add Answer to:
If a sample of U−238 initially contained 1.1×1018 atoms when the universe was formed 13.8 billion...