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yan [13]
3 years ago
9

Given the redox reaction: Ni + Sn4+ → Ni2+ + Sn2+ Which species has been oxidized?

Chemistry
1 answer:
Vadim26 [7]3 years ago
4 0
Remember this---> LEO=  lose electons oxidation... and GER----> gain electrons reduction

so if you look for the one being oxidized, it is the one losing electrons. since electrons are negative, when an atom lose them, it becomes less negative, so more positive. 

you can identify the oxidization when the atom becomes more positive.

so in the given reaction: <span>Ni + Sn4+ → Ni2+ + Sn2+
</span>
Ni becomes Ni +2   and    Sn+4 becomes Sn+2

as you can see the Ni become Ni+2 so more positive

Ni is being oxidized

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One peanut M&amp;M weighs approximately 2.33 g.
Sphinxa [80]

Answer:

There are 23076 peanut M&M's in 53.768 kg of M&M's.

Explanation:

First we <u>convert 53.768 kg into g</u>:

  • 53.768 kg * 1000 = 53768 g

Then we <u>divide the total mass of M&M's by the mass of one peanut M&M,</u> in order to calculate the answer:

  • 53768 g / 2.33 g = 23076

So there are 23076 peanut M&M's in 53.768 kg of M&M's.

3 0
2 years ago
During which era did the supercontinent Pangaea break up?
Rudiy27
It broke up in the Mesozoic era.
7 0
3 years ago
Read 2 more answers
"calculate the ratio of the velocity of hydrogen molecules to the velocity of carbon dioxide molecules at the same temperature"
Ne4ueva [31]

Answer: 1:4.69

Explanation:

The ratio can be expressed as:

Ua/Ub= √(Mb/Ma)

Where Ua/Ub is the ratio of velocity of hydrogen to carbon dioxide and Ma is the molecular mass of hydrogen gas= 2

Mb is the molecular mass of CO2 = 44

Therefore

Ua/Ub= √(44/2)

Ua/Ub = 4.69

Therefore the ratio of velocity of hydrogen gas to carbon dioxide = 1:4.69

which implies hydogen is about 4.69 times faster than carbon dioxide.

8 0
3 years ago
if a standard die is rolled twice what is the probability of getting a perfect square,then a number that is less than 5.
Amanda [17]
There are three perfect squares in a standard die; 1, 2, 4. If there is two standard dies, then the probability of getting a perfect square is 1/3 x 1/3 = 1/9. 
There are 4 numbers less than 5 in a standard die, making it 1/4 x 1/4=1/16. 
7 0
3 years ago
The molecular weight of vitamin C , C6H8O6 is 176.12 grams over mol
IgorC [24]

Answer:

0.0250 g.

Explanation:

∵ no. of moles (n) = mass / molar mass.

<em>∴ mass of Vitamine C = (n)(molar mass)</em> = (0.000142 mol)(176.12 g/mol) = 0.02501 g = <em>0.0250 g. "three significant figures"</em>

3 0
3 years ago
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