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3 years ago

Given the redox reaction: Ni + Sn4+ → Ni2+ + Sn2+

2 answers:

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<span>1. Na
2. Ni
3. Na2S
4. Electrolytic Cell (Galvanic and Voltaic are synonyms, both are electric cells without an external power source.
5. 3
6. The first one
7. Na
8. Reducing agents are oxidized
hope this helps you

</span>

Ludmilka [50]3 years ago

5 0

Answer: Ni

Explanation: Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.

$Ni\rightarrow Ni^{2+}+2e^-$

Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.

$Sn^{4+}+2e^-\rightarrow Sn^{2+}$

The oxidation state of nickel increases from 0 to +2, it is getting oxidized and it undergoes oxidation reaction.

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245 g water sample initially at at 32 oC absorbs 17 kcal of heat. What is the final temperature of water?

steposvetlana [31]

Answer:62.66°C or 235.66K

Explanation:Q=McpT, the energy was given in calories so you first convert to Joules by multiplying the value in calories by 4.184J.

17*4.184=71.128kJ.

71.128kJ=mcpT

71.128kJ=245*4.187*(T-Tm)

Tm is the final temperature of the mixture. The T is the temperature given which should be converted to Kelvin by adding 273...T=32+273=305K.

71128J=245*4.187*(305-Tm)

71128=312873.575-1025.815Tm

1025.815Tm=312873.575-71128

1025.815Tm=241745.58

Tm=241745.58/1025.815

Tm=235.66K

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2 years ago

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2 years ago

If 0. 3 moles of H2O were produced, how many moles of carbon dioxide would also have been produced?

grigory [225]

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6 months ago