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ra1l [238]
3 years ago
7

Can anyone help with thiss??

Chemistry
1 answer:
IrinaVladis [17]3 years ago
5 0
  1. l
  2. kg
  3. cm
  4. gm
  5. ml
  6. km,m
  7. m
  8. nm
  9. mg
  10. ms
  11. gm
  12. nm
  13. .
  14. .
  15. l,gm
  16. .
  17. kg
  18. m
  19. gm,m
  20. s

Hope this helps :-). And....

ml: milliliter

kg: kilogram

m: meter

mg: milligram

mm: millimeter

ms: millisecond

l: liter

km: kilometer

µg: micro gram

cm: centimeter

g: gram

nm: nano meter


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fgiga [73]

The oxidation state of the elements  in the compounds are:

CoH₂:

  • Co = +2
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FeBr₃:

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<h3>What is the oxidation states of the elements in the given compounds?</h3>

The oxidation states of the elements in each of the given compounds is determined as follows:

Cobalt dihydride, CoH₂

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In conclusion, the oxidation state of the elements are charges they have in the compound.

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2 years ago
There are 31.1 grams (g) in 1 troy ounce (ozt). How many ozt of gold are extracted from 1 short ton of average Nevada ore
devlian [24]

This problem is providing us with the mass equivalent to one troy ounce. Thus, the troy ounces of gold in one short ton of average Nevada ore is required and found to be the 0.103 otz according to the following dimensional analysis.

<h3>Dimensional analysis</h3>

In chemistry, a raft of problems do not always provide an equation in order to be solved yet dimensional analysis can be applied, so as to obtain the desired amount in the required units.

Thus, since this problem asks for try ounces in an average Nevada ore,  which has 3.2 grams of gold per short ton of ore, one can solve the following setup in order to obtain the required answer in otz:

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Where the short tons are cancelled out as well as the grams, in order to obtain:

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A ph of 7 contains only water.

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