<span>They have the same mass and are both located in the nucleus of the atom.</span>
The gas is NH₃.
H₂ doesn't dissolve readily in water, SO₂ gives an acidic solution in water.
The solid residue is Fe(OH)₂.
FeSO₄ and Na₂SO₄ are soluble in water.
The answer is C.
It would cause a drop <span>but I am not sure double check other answers </span>
<u>Answer:</u> The daughter nuclide formed by the beta decay of given isotope is 
<u>Explanation:</u>
Beta decay is defined as the process in which beta particle is emitted. In this process, a neutron gets converted to a proton and an electron.
The released beta particle is also known as electron.

We are given:
Parent isotope = 
The chemical equation for the beta decay process of
follows:

Hence, the daughter nuclide formed by the beta decay of given isotope is 
Answer:
20 mole of oxygen
Explanation:
1 mole of proprane reacts with 5 moles of oxygen so 4 time 5 equals 20