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Sidana [21]
3 years ago
15

List two ways in which heterogeneous mixtures differ from elements.

Chemistry
1 answer:
Georgia [21]3 years ago
3 0
Heterogeneous mixtures differ from elements in two ways. First, elements are not a mixture at all; they are pure substances. Heterogeneous mixtures are not pure. The other way is that a heterogeneous mixture can be separated by physical means; elements can't be separated at all; if the elements are separated, it will change their composition. Hope this helps

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Determine the molar mass of Ze(NO3)2. (Ze=55.85 N=14.01 O=16.00) *<br> Help
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Answer:

179.87 g/mol

Explanation:

First you need to determine the number of each elements in the molecule.  This information comes from the molecular formula.  

Ze(NO3)2 tells us that there is 1 Ze atom and 2 NO3 anions per molecule.  each NO3 anion will have 1 nitrogen and 3 oxygens.  Due to that, one molecule of Ze(NO3)2 will have 1 atom of Ze, 2 atoms of nitrogen (N), and 6 atoms of oxygen (O).

Next you need to add all of the individual atom's molar masses to get the over all molar masses.  The molar masses of each element is in the question but it can also be found on the periodic table.

molar mass of Ze(NO3)2 = 55.85g/mol + (14.01g/mol*2) + (16.00g/mol*6)

molar mass of Ze(NO3)2 = 179.87 g/mol

I hope this helps.

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