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timofeeve [1]
3 years ago
14

Balance the following equations:

Chemistry
1 answer:
Ganezh [65]3 years ago
5 0

Answer:

50CuS2 + 260HNO3 = 50Cu(NO3)2 + 100H2SO4 + 80N2O + 3H2O

Explanation:

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irakobra [83]
I think the correct answer from the choices listed above is option D. The statement t hat describes a characteristic of a terminal moraine would be that it <span>can pluck pieces of rock out of a mountain to create a circular basin. Hope this answers the question. Have a nice day.</span>
4 0
3 years ago
For each given [H3O+] or [OH-], find the corresponding [OH-] or [H3O+] at 25°C.
-BARSIC- [3]

Answer:

a) [H3O+] = 1.00 E-10 M ⇒ [OH-] = 1.0 E-4 M

b) [H3O+] = 1.00 E-4 M ⇒ [OH-] = 1.0 E-10 M

c) [H3O+] = 9.90 E-6 M ⇒ [OH-] = 1.0 E-9 M

Explanation:

  • 14 = pH + pOH
  • pH = - Log [H3O+]

a) [H3O+] = 1.00 E-10 M

⇒ pH = - Log(1.00 E-10) = 10

⇒ pOH = 14 - 10 = 4

⇒ 4 = - Log[OH-]

⇒ [OH-] = 1.0 E-4 M

b) [H3O+] = 1.00 E-4 M

⇒ pH = 4

⇒ pOH = 10

⇒ [OH-] = 1.0 E-10 M

c) [H3O+] = 9.90 E-6 M

⇒ pH = 5

⇒ pOH = 9

⇒ [OH-] = 1.0 E-9 M

8 0
3 years ago
How is earths environment unique in the solar system
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3 years ago
Anyone want to join my skype im 13 and bored.
Sergio [31]

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No thanks.

Explanation:

Have a great day though!

4 0
3 years ago
Read 2 more answers
Which aqueous solution will have the highest boiling point temperature? A. 0.100 molal NiBr2(aq) B. 0.250 molal CH3OH(aq) C. 0.1
zaharov [31]

Answer: 0.150 m Na_2SO_4(aq) will have highest boiling point.

Explanation:

Formula used for Elevation in boiling point :

\Delta T_b=i\times k_b\times m

where

\Delta T_b=T_b-T^o_b= elevation in boiling point

[tex[k_b[/tex]  = boiling point constant  

m = molality

i = Van't Hoff factor

A) 0.100 m NiBr_2

i = 3 as NiBr_2\rightarrrow Ni^{2+}+2Br^-

concentration will be 3\times 0.100=0.300

B) 0.250 m CH_3OH

i = 1 as CH_3OH is a non electrolyte

concentration will be 1\times 0.250=0.250

C) 0.100 molal MgSO_4(aq)

i = 2 as MgSO_4\rightarrrow Mg^{2+}+SO_4^{2-}

concentration will be 2\times 0.100=0.200

D. 0.150 molal Na_2SO_4(aq)

i = 3 as Na_2SO_4\rightarrrow 2Na^{+}+SO_4^{2-}

concentration will be 3\times 0.150=0.450

E. 0.150 molal NH_4NO_3(aq)

i = 2 as NH_4NO_3\rightarrrow NH_4^{+}+NO_3^{-}

concentration will be 2\times 0.150=0.300

The solution having the highest concentration of ions will have the highest boiling point and thus 0.150 m Na_2SO_4(aq) will have highest boiling point.

8 0
3 years ago
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