Half-life dating techniques:
1. If you find a rock that is 1.25 billion years old, what should be the ratio of daughter to parent?

2. If you find a rock that is 2.5 billion years old, what should be the ratio of daughter to parent?

3. If you find a rock that is 3.75 billion years old, what should be the ratio of daughter to parent?

Question

Half-life dating techniques:
1. If you find a rock that is 1.25 billion years old, what should be the ratio of daughter to parent?

2. If you find a rock that is 2.5 billion years old, what should be the ratio of daughter to parent?

3. If you find a rock that is 3.75 billion years old, what should be the ratio of daughter to parent?

anonymous · Answer

you've got to know what the half-life of the rock is.

anonymous · Answer

How do I find out what the half-life is?

anonymous · Answer

Umm, it should be included in the problem.

anonymous · Answer

The only table I have is where it shows: 
Potassium 40/Argon 40= (half-life) of 1.25 billion yrs, 
Rubidium 87/Strontium 87=48.8 billion yrs,
Thorium 232/Lead 208=4 billion years, 
Uranium 235/Lead 207=704 million years, 
Uranium 238/Lead 206=4.47 billion years,
Carbon 14/Nitrogen 14=5730 years,

anonymous · Answer

Sorry, I don't think I can help you :(

anonymous · Answer

Okay thanks, for trying.