Answer:
gold
Explanation:
to work out density you do mass which is 38.6 divided by volume which is 2cm cubed and you get the answer of 19.3 so it is gold.
This was because the experiment showed that a substance could emit radiation even while it was not exposed to light.
Question 2: Answer is (B), Soil Conservation Act (1936)
Hope that helps!!!
Answer:
Carbon dioxide and water I believe because it is a combustion reaction
B is true if we subtract atomic number(the number of protons )from the mass number
we can find neutrons.
hope this helps
