Free ACT Score Predictor
Original ACT-style questions aligned to current Math, English, and Science reasoning sections.
Question
1 / 10
ACT Composite
0 correct
ACT Science: A scientist observes a radioactive isotope with a half-life of 4 hours. If the initial sample mass is 120 grams, approximately how much remains after 14 hours?
Tool-led assessment. Locale: en
Related Exam Practice
Preparing for multiple exams? Try these related practice tools:
More ACT Tools
Get the QuizVerse App
More ACT questions inside