Question

Calculate the mass ofCaWo4
scheelite that contains a million oxygen atoms.

Be sure your answer has a unit symbol if necessary, and round it to significant digits.

Answer 1

sorry I don't know !!!!!

Answer 2

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

Explanation:

We are given:

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

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

According to mole concept:

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

We know that:

Molar mass of $CaWO_4$ (scheelite) = 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

#learnwithbrainly