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mole (1 Viewer)

fires

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yo can someone show the wrking out for the following questions

a student was given a sample of 2.3g of the compound NO2. How many:
- atoms were in the sample provided (answer: 9.0 x 10^22 atoms)
- atoms of oxygen were in the sample provided (answer: 6.0 x 10^22 atoms)
- moles of oxygen were in the sample in the sample provided (answer: 0.10 moles)

AND

Q: how many atoms are there in 36g of water?
A: 3.6 x 10^24 atoms (2 sig. fig.)


AND

Q: how many moles of Ag+ ions are there in 3.71 moles of AgNo3?
A: 3.71 mol (3 sig. fig.)
 
Last edited:

JaxsenW

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Hope that helps :)


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