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svlad2 [7]
3 years ago
12

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Chemistry
2 answers:
ira [324]3 years ago
8 0
Hey, how are you.....
geniusboy [140]3 years ago
5 0

Answer:

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In which of these samples do atoms have the greatest kinetic energy
shepuryov [24]

Answer is: atoms have the greatest kinetic energy in liquid iron (2,000°C).

The average kinetic energy of molecules depends on the temperature. 

At high temperature(2,000°C), molecules of iron have greater kinetic energy than molecules of iron at low temperature (1,600°C, 65°C and 25°C)..

Read more on Brainly.com - brainly.com/question/8237916#readmore

7 0
3 years ago
Li+1 had gained ______ one electron
zysi [14]
Maybe molecules one electron
3 0
3 years ago
2.50 g of Zn is added to 5.00 g of HCl
Debora [2.8K]
Zn+2HCl ----> 2ZnCl2 + H2

For 2.50 g of Zn

Mass per mol = 2.50/molar mass of Zn = 2.50/65.38 = 0.0382 g/mol
There are two moles of ZnCl2 and total mass = 2*0.0382*molar mass of ZnCl2 = 2*0.0382*136.286 = 10.42 g

For 2 g of HCl

Mass per mol = 2/2*molar mass of HCl = 2/ (2*36.46) = 0.0274 g/mol
For the two moles of ZnCl2, mass produced = 2*0.0274*136.286 = 7.48 g

It can be noted that 2 g of HCl produced less amount of ZnCl and thus it is the limiting reagent.
5 0
3 years ago
What are chemistry questions for high school students about atomic size trends?
serg [7]
It is mostly about an element, it usually goes like this: "which element has the bigger atomic size, Sodium or Oxygen? " 
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Which of the following is NOT an example of a chemical change? *
lord [1]
Grinding as it’s a physical not chemical change :)
4 0
3 years ago
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