Answer: 2.60 x 10^23 molecules
50.0 grams x (1 mol/115.79 grams) = 0.431816219 moles
0.431816219 mol x (6.02 x 10^23 molecules/1 mol) = 2.599533638 x 10^23 molecules (final answer is rounded)
The most common species of nitrogen in which its oxidation state is zero is the diatomic nitrogen (
). This is because the oxidation number of pure elements (whether alone as an atom or combined with other atoms of the same element such as the diatomic nitrogen) is always zero.
In addition to diatomic nitrogen, there are diazonium (
) compounds where nitrogen has an oxidation number of zero.
So pH of the 1.0 * 10-2 mol-1 KOH is 12.
The yeast and Hydrogen Peroxide is the chemical change, because when something is changed chemically, there is a chemical added that cannot be taken away to make it go back to it's original state. However when you're blowing bubbles in milk, no chemicals were added and it will go back to it's original state.
Answer:
Iron(II) sulfate
Explanation:
Chemical equation of formation of FeSO₄:
Fe + H₂SO₄ → FeSO₄ + H₂
The name of FeSO₄ is Iron(II) sulfate.
It is also called ferrous sulfate.
It is blue green crystalline solid.
It is odorless.
It is inorganic salt.
Its atomic mass is 151.908 g/mol.
Its density is 1.898 g/ml.
This salt is soluble in water.
The melting point of anhydrous ferrous sulfate is 680°C.
It is used in medicine in treatment of anemia.
