The activity of tocopherols is destroyed by
1 answer:
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Answer:
<h3>The answer is 2.67 g/cm³</h3>Explanation:
The density of a substance can be found by using the formula
From the question
mass of metal = 32 g
volume = 12 cm³
The density is
We have the final answer as
<h3>2.67 g/cm³</h3>Hope this helps you
sulphate ions and
ammonium ions are present in a 0.310 mole sample of (NH₄)₂SO₄ .
The International System of Units uses the mole (symbol: mol) as the unit of material quantity (SI). How many elementary entities of a particular substance are present in an object or sample is determined by the quantity of that material.
There are precisely 6.022140761023 elementary entities in a mole. An elementary entity can be an atom, a molecule, an ion, an ion pair, or a subatomic particle like an electron depending on what the substance is.
How this is calculated?
- The subscripts next to each atom allow you to find the number of moles of each element in the compound.
- Then, in every mole of (NH₄)₂SO₄ there are:
2 moles of ammonium (NH₄) ions and 1 mole of sulfate (SO₄) ions.
- Number of sulphate ions:
- Number of ammonium ions:
To know more about moles, refer:
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