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7nadin3 [17]
3 years ago
5

URGENT HELP PLEASE balance equation !20 points!

Chemistry
1 answer:
yKpoI14uk [10]3 years ago
5 0
Au^2S^3+ 3H^2 = 2Au + 3H^2S
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1. How many atoms are there in 2.8 moles of carbon? You must show your work to receive credit.
Zolol [24]

Answer:

The answer to your question is

1.-  1.686 x 10²⁴ atoms

2.- 0.25 moles

Explanation:

1.-

              1 mol ---------------- 6.023 x 10²³ atoms

             2.8 moles ----------  x

              x = (2.8 x 6.023 x 10²³) / 1

              x = 1.686 x 10²⁴ atoms

2.-           1 mol ------------------ 6.023 x 10 ²³ molecules

               x moles -------------  1.50 x 10²³ molecules

              x = (1.50 x 10²³ x 1) / 6.023 x 10²³

              x = 0.25 moles                                                      

6 0
3 years ago
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If there were only 4 protons, but the number of electrons remained at 6, what would the charge of this atom be? please help!!
lina2011 [118]

Answer:

Negatively charged

Explanation:

It could be an ion too. To balance the electron shell it could lose 1 or 2 electrons. If it is not an ion it won't lose atoms to balance the shells.

5 0
2 years ago
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3 years ago
When a substance melts it is said to go through all of the following except:
Alex Ar [27]
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