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Helen [10]
3 years ago
9

Which of the following equations is balanced?

Chemistry
1 answer:
n200080 [17]3 years ago
6 0

Answer:

a

Explanation:

a because a

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ii. Fill in the blanks for the drawing of a voltaic cell that’s made with copper/copper (II) nitrate (E° = 0.34 V) and zinc/zinc
Basile [38]

<em>Answer:(i) Voltaic cell</em>

<em />

<em>A voltaic cell is a device that uses a chemical reaction to produce electrical energy.</em>

<em>a. Electron flow</em>

<em />

<em>b. Voltmeter or lightbulb</em>

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<em>c. Electron flow</em>

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<em>d. Cathode or Cu</em>

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<em>e. Cu²⁺(aq) and NO₃⁻(aq)</em>

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<em>f. Salt bridge</em>

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<em>g. Zn²⁺(aq) </em>

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6 0
3 years ago
ight energy can be described as nhf , where n is a number of photons, h is Planck's constant, and f is the frequency of the ligh
Andrei [34K]

Answer:

1.496x 10^24photons

Explanation:

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I mole of  Energy of NADP+ = 219Kj/mol

2 moles of  Energy of NADP+ = 2x 219= 438kj/mol = 438x10^3j

/mol

E= nhc/λ

438x 10^3j/mol -= n x (6.636*10 ^-34 x  3x10^8) / 680*10^-9

n=438x10^3j x 680x 10^-9/ (6.636*10 ^-34 x 3.0x10^8

1.496x 10^24photons

7 0
3 years ago
Which describes the process of injecting fluids into cracks of rocks to recover oil deposits?
lord [1]
Pretty sure it’s cementing
4 0
3 years ago
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A star is born whenever a nebula expands...True Or False?
olasank [31]
I am pretty sure the answer is true 

5 0
3 years ago
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Answer:

Cost.  

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Explanation:

Hope this helped!!!

7 0
3 years ago
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