It showed that the nucleus is positively charged, and that the atom isn't just made of electrons.
Answer:
Your answer here is B. Add water and the wooden beads will float.
Explanation:
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Density can be calculated using the following rule:
density=mass/volume
therefore,
volume=mass/density
we have mass=0.451g and density=0.824g/ml
substituting in the above equation, we can calculate the volume as follows:
volume = 0.451/0.824 = 0.547 ml