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ale4655 [162]
3 years ago
12

Calculate how many moles of Ca(OH)2 are needed to produce 4.8 x 1024 NH3 molecules, according to the following equation

Chemistry
1 answer:
bonufazy [111]3 years ago
5 0

Answer:

66.33

Explanation:

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Help me with this please ​
Gala2k [10]

Answer:

Gap 1, S-Phase, Gap 2, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis

Hope this helps.

8 0
3 years ago
Tarnish on copper is the compound CuO. A tarnished copper plate is placed in an aluminum pan of boiling water. When enough salt
Jet001 [13]

Answer:  2.00 V

Explanation:

The balanced redox reaction is:

2Al+3Cu^{2+}\rightarrow 2Al^{3+}+3Cu

Here Al undergoes oxidation by loss of electrons, thus act as anode. Copper undergoes reduction by gain of electrons and thus act as cathode.

E^0=E^0_{cathode}- E^0_{anode}

Where both E^0 are standard reduction potentials.

Al^{3+}+3e^-\rightarrow Al E^0_{[Al^{3+}/Al]}=-1.66V

Cu^{2+}+2e^-\rightarrow Cu E^0_{[Cu^{2+}/Cu]}=0.340V

E^0=E^0_{[Cu^{2+}/Cu]}- E^0_{[Al^{3+}/Al]}

E^0=+0.34- (-1.66V)=2.00V

Thus the standard cell potential is 2.00 V

6 0
3 years ago
Which has a higher electronegativity phosphorus or sodium
Yuliya22 [10]

Answer:

it is phosphorus it has o most 2 times as much  electromagnetically

Explanation:

4 0
3 years ago
For the reaction 2Co3+(aq)+2Cl−(aq)→2Co2+(aq)+Cl2(g). E∘=0.483 V what is the cell potential at 25 ∘C if the concentrations are [
Nesterboy [21]

Answer:

Ecel =0,04 V

Explanation:

Apply the Nerst equation,

Ecel= Ecelº - (RT/nF)*lnQ

where R=8,314 J/molK, T=25ºC=298K and F =96 485 Coulombs/mol e- and n=number of moles of electrons transferred in the balanced equation. Q is cocient of products and reactives power to respective coefficients, if is a gas apply partial pressure

Write the semiequation redox and verify the numbers of electron for balance. In this case you don't need to change nothing

2Cl−(aq)→Cl2(g) + 2e-

<u>2CO3+(aq) + 2e-→2CO2+(aq)</u>

2Cl−(aq) + <u>2CO3+(aq) </u>→<u>2CO2+(aq) + </u>Cl2(g)

Hence

Ecel= 0.483 V -  0.013Ln ([CO2+]^2*PCl2] / [CO3+]^2*[Cl-]^2)

Ecel= 0.483 V -  0.013Ln ([0.205]^2 * 7.3] / [0.19]^2*[0.144]^2)

Ecel =0,04 V

6 0
3 years ago
When 25mL of 0.30M solution is diluted to 50 m L , the new concentration is:
Citrus2011 [14]
The first option i hope this helps

3 0
3 years ago
Read 2 more answers
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