Question

Calculate the mass of scheelite (CaWo4) that contains a million oxygen atoms.

Answer 1

Answer:

Calculate the mass of scheelite (Cawo4) that contains a trillion (1.00 × 1012) oxygen atoms. Be sure your answer has a unit symbol if necessary, and round it to 3 significant digits Ix10

Answer 2

The mass of scheelite having one million oxygen atoms is $1.96\times 10^{-16}g$

Explanation:

We are given:

Number of oxygen atoms = $10^6$  (million atoms)

According to mole concept:

$6.022\times 10^{23}$ number of particles are present in 1 mole of a substance

Molar mass is defined as the mass of 1 mole of a substance

We know that:

Molar mass of $CaWO_4$ = 288 g/mol

1 mole of scheelite contains 1 mole of calcium atom, 1 mole of tungsten atom and 4 moles of oxygen atom

Applying unitary method:

$(4\times 6.022\times 10^{23})$ number of oxygen atoms in scheelite have a mass of 288 grams

So, $10^{6}$ number of oxygen atoms in scheelite wil have a mass of $\frac{288}{4\times 6.022\times 10^{23}}\times 10^{6}=1.96\times 10^{-16}g$

Learn more about mole concept:

https://brainly.com/question/10982990

https://brainly.com/question/13265684

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