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Li: atomic mass 6.941

F: atomic mass 18.998

Lithium fluoride is made up of these two elements. Its balanced formula is LiF (Li+1F-1). Adding both its atomic masses equals 25.939. Therefore one mole of LiF is equal to 25.939 grams. So, 1.5 moles of LiF is equal to 38.90 grams.

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39.5 grams Li (1 mole Li/6.941 grams)(6.022 X 10^23/1 mole Li)

= 3.43 X 10^24 atoms of lithium

1.5 moles

Q: Why is 1.5 moles equivalent to 39 grams of LiF?

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15 moles O2 (32 grams/1 mole O2) = 480 grams

134.1 grams

You have2KClO3 ==> 2KCl + 3O2 as the balanced equation 25 g KClO3 x 1 mole/123 g = 0.20 moles moles KCl formed = 0.20 moles KClO3 x 2 moles KCl/2 moles KClO3 = 0.20 moles KCl formed grams KCl = 0.20 moles x 74.5 g/mole = 14.9 g = 15 grams of KCl formed

From the periodic table, lithium has an atomic weight of 6.941. The molar mass of an element is the atomic weight in grams. Therefore, 1 mole Li = 6.941g Li Therefore, moles Li = 15g Li X 1 mole Li/6.941g Li = 2.2 moles Li

The Answer is.56 moles OR 0.56 moles

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15 grams of nitrogen are equal to 1,071 moles.

15 moles O2 (32 grams/1 mole O2) = 480 grams

15 moles of 02 equal 480 g.

A lot! 9.51 X 103 grams Pb (1 mole Pb/207.2 grams) = 45.9 moles of lead ===============

The equivalent is 1,6.10e-15 moles.

134.1 grams

It doesn't matter whether it's butter or anything else. !50 grams is 150 grams. It's roughly equivalent to 5 ozs

1 baht equivalent to 15 grams

You have2KClO3 ==> 2KCl + 3O2 as the balanced equation 25 g KClO3 x 1 mole/123 g = 0.20 moles moles KCl formed = 0.20 moles KClO3 x 2 moles KCl/2 moles KClO3 = 0.20 moles KCl formed grams KCl = 0.20 moles x 74.5 g/mole = 14.9 g = 15 grams of KCl formed

1.5 x 18 = 27g

100 grams

From the periodic table, lithium has an atomic weight of 6.941. The molar mass of an element is the atomic weight in grams. Therefore, 1 mole Li = 6.941g Li Therefore, moles Li = 15g Li X 1 mole Li/6.941g Li = 2.2 moles Li