We Know that Number of Protons in an Element's Atom Indicates the Atomic Number of the Element.
Given : The Atom of Element A has 11 Protons
⇒ The Atomic Number of Element A is 11
<span>
</span>∴
=
= 0.0147 mol
1 : 1
∴
= 0.0147 mol
Mass = Molar Mass * Mol
∴
= [(23 * 2)+(65)+(16 * 4) + (1*4)] g/mol * 0.0147 mol
= 179 g/mol * 0.0147 mol
=
2.63 g
Answer:
D. 9.0x10²³ atoms
Explanation:
First we use <em>Avogadro's number</em> to <u>calculate how many molecules of Si₂H₆ are there in 0.75 mol</u>:
- 0.75 mol * 6.023x10²³ molecules/mol = 4.52x10²³ molecules
There are 2 Si atoms in one Si₂H₆ molecule, that means that in 4.52x10²³ Si₂H₆ molecules there will be:
- 2 * 4.52x10²³ = 9.03x10²³ Si atoms
Thus the answer is option D.
Answer:
Milk, cream, milk solids, sugars, modifying agents and flavourings are blended together in stainless steel vats.
The mix is homogenised to create a consistent texture.
The mix is pasteurised by heating at 82-85°C for 15 seconds then cooled to destroy bacteria.
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