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katrin [286]
3 years ago
8

1. What are the products of most combustion reactions?

Chemistry
1 answer:
valina [46]3 years ago
5 0
1.Products of most combustion reactions are:
Carbon dioxide and water
2.Alloys are made by melting and combining metals together.
Chemical changes involve electrons,in this process no electron is used/shared or given.
Thus,its not a chemical change.
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Alenkasestr [34]

Answer:

B

Explanation:

Because the iron is wrong because of the contemplation of bisectors interfere with the question making it B.

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3 years ago
What is the specific heat capacity of a 70 g sample of an unknown metal that releases 6700J of heat when it cools from 90 to 25
swat32
Q = mCpΔT —> Solve for Cp —> Cp = q/mΔT

q = -6700 J (negative because it released heat
m = 70 g
ΔT = Final temp - initial temp = 25 - 90 = -65°C

Cp = -6700 J / (70 g)(-65°C) = 1.47 J/g°C
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3 years ago
______collisions describe the process by which particles collide and transfer energy without loss of energy.
Elina [12.6K]

Answer:

A. Elastic

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List 5 chemical properties of water?? ​
Marat540 [252]

Answer:

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  3. Amphoteric nature : Water can act as both acid and base, which means that it is amphoteric in nature.
  4. Hydrolysis reaction : Water has a very strong hydrating tendency due to its dielectric constant. It dissolves many ionic compounds. Some covalent and ionic compounds can be hydrolyzed in water.
  5. Redox reactions : Electropositive elements reduce water to hydrogen molecule. Thus, water is a great source of hydrogen.
5 0
3 years ago
What is ion exchange ​
dolphi86 [110]

Answer:

ion exchange is the exchange of ions of the same charge between an insoluble solid and a solution in contact with it, used in water-softening and other purification and separation processes.

Explanation:

hope this helped !

3 0
3 years ago
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