Answer is (b) , because a chemical change happened
Answer:
This approximation of mass can be used to easily calculate how many neutrons an element has by simply subtracting the number of protons from the mass number. Protons and neutrons both weigh about one atomic mass unit or amu. Isotopes of the same element will have the same atomic number but different mass numbers.
Explanation:
What volume of 2.50 m lead ll nitrato
The substance has a higher density than water
