Chemistry, 09.01.2020 06:31 thompsonjeremiah837

This is on gizmo:
95.0 g al = mol al
2.10 mol fecl2 = molecules fecl2

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Answer from: Redmondwllc3439

95.0 g of Aluminum is equal to 3.52 moles of Aluminum2.10 mol of FeCl2 is equal to 1.264 × 10²⁴ molecules FeCl2

HOW TO CALCULATE MOLES:

The number of moles of a substance can be calculated by dividing the mass (g) of the substance by its molar mass (g/mol). That is;Moles = mass (g) ÷ molar mass (g/mol)Molar mass of Al = 27g/molMoles = 95g ÷ 27g/molMoles = 3.52mol

HOW TO CALCULATE NUMBER OF MOLECULES:

The number of molecules in a substance can be calculated by multiplying the number of moles in that substance by Avogadro's number. That is;No. of molecules in FeCl2 = 2.10mol × 6.02 × 10²³No. of molecules of FeCl2 = 12.64 × 10²³No. of molecules of FeCl2 = 1.264 × 10²⁴ molecules.

Therefore,

95.0 g of Aluminum is equal to 3.52 moles of Aluminum2.10 mol of FeCl2 is equal to 1.264 × 10²⁴ molecules FeCl2

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Answer from: matthewboeckman6831

Moles are the base unit of a substance, which is used to measure small entities like atoms, molecules and other particles. The value of one mole is equivalent to 6.022 x $10^{23}$ . In the given gizmo:

95.0 g Al = 3.52 mol Al2.10 mol FeCl

= 1.264 x $10^{24}$ molecules FeCl

The moles of a substance can be calculated as the ratio of given mass and molar mass of a substance. The unit of a substance is expressed in g/mol.

Given that,

Molar mass of Al = 27 g/molGiven mass of Al = 95 g $\text n&=\dfrac{\text{given mass}}{\text{molar mass}}\\\\\text n&=\dfrac{\text{95}}{\text{27}}\\\\\text n &= 3.52\;\text{moles}$

Now,

The number of molecules can be calculated as multiplication of number of moles in the substance and Avogadro's number.

Now, for iron chloride, the number of molecules can be calculated as:

Given that,

No. of mole in FeCl

= 2.10 molNo. of molecules in FeCl

= number of moles x Avogadro's numberNo. of molecules in FeCl

= 2.10mol × 6.02 × 10²³ = 12.64 x $10^{23}$ or,

= 1.264 x $10^{23}$

Therefore,

The number of moles of aluminum in 95 g are 3.52 moles. 2.10 mol of FeCl

is equal to 1.264 × 10²⁴ molecules FeCl

To know more about moles, refer to the following link:

link

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