After four half-lives of a radioactive substance, you have 2.0 g left. How much material did you start with?

2.0 g

8.0 g

16.0 g

32.0 g

How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles

In pea plants, the allele for tallness (t) is dominant to the allele for shortness (t). in the cross between a tall pea plant and a short pea plant shown below, what is the probability that the resulting offspring will be tall? whats the percent

Explanation for basic character?