Answer:
the same
Explanation:
due to the law of conservation of mass, the mass will not change
Answer:
Because it might be reactive or may lose its property in liquid form..
the answer is B. 2
because there is 2 iron on the right side so you need another two on the left side to balance it out
The number of atoms N = 5.8 x 10²¹
<h3>Further explanation</h3>
A mole is a unit of many particles (atoms, molecules, ions) where 1 mole is the number of particles contained in a substance that is the same amount as many atoms in 12 gr C-12
1 mole = 6.02.10²³ particles
mass of N in 0.82 g of NaNO₃ (MW NaNO₃: 85 g/mol) :

moles of N :

The number of atoms N :

B. Rovers are what you are looking for