HEY THERE
THATS EASY...
YOU CAN USE A MAGNET TO ATTRACT THE IRON FILLINGS WHICH WOULD THEN SEPARATE FROM THE SAND.
Answer:
Calculate the rate of decay constant for U-238 if its half-life is 4.468 × 109 years. Answer: If the problem is referring to the half-life, then the ratio of = 0.5 because half of the original sample has already undergone decay.
Explanation:
Answer:
An element is a pure substance that cannot be converted further into anything simpler than itself by physical or chemical process
They all share the same atomic number (number of protons)
