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solong [7]
3 years ago
9

08 03 M

Chemistry
1 answer:
kvv77 [185]3 years ago
5 0

Answer:

The star is a special star

Explanation:

it is a binary star it is dominated by a luminous main sequence of star! it has a magnitude of -1.46. Sirius A's apparent bright ness can be attributed both to its inherited luminosity! 20 times that of thr sun anf its proximity. At just 8.7 Light years away sirius is the seventh closest star to earth.

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Water i think because it’s a pure substance
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If 3.0 moles of hydrogen react, how many grams of nitrogen will be used? Round your answer to the nearest whole number. N2 + 3H2
Iteru [2.4K]

Answer:

28g

Explanation:

Given parameters:

Number of moles of hydrogen  = 3moles

Unknown:

Mass of nitrogen used = ?

Solution:

 To solve this problem, let us establish the balanced reaction equation first;

             N₂  + 3H₂ →  2NH₃

From the balanced reaction equation;

                 3 mole of H₂ will combine with 1 mole of N₂

                 

Now,

   Mass of Nitrogen  = number of moles x molar mass

         Molar mass of N₂  = 2(14) = 28g/mol

   Mass of Nitrogen  = 1 mole x 28g/mole  = 28g

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3 years ago
Will mark as Brainliest.
Serga [27]
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There are three different digits that make up the melting point of a compound. Describe these and detail what the sample looks l
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<em />

Explanation:

I'm pretty positive that's the right answer.........

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