# If there were 400g of U238 in a sample, how many grams would be left in 18billion years1-2002-1003-504-25

4 answers

###### Question:

If there were 400g of U238 in a sample, how many grams would be left in 18 billion years

1-200

2-100

3-50

4-25

1-200

2-100

3-50

4-25

## Answers

It shows that the experiment is designed properly.

C. 1s22s22p63s23p43d104s24p5

What are the choices?

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.

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