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Lostsunrise [7]
3 years ago
9

What happens when sodium and potassium react with water?

Chemistry
2 answers:
jonny [76]3 years ago
8 0
Those metals are very reactive elements. The chemical oxidation with water occurrs suddenly.
Good luck!
alekssr [168]3 years ago
5 0
They react and explode
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What would be the freezing point of a solution that has a molality of 1.324 m which was prepared by dissolving biphenyl (C12H10)
lbvjy [14]

The freezing point of a 1.324 m solution, prepared by dissolving biphenyl into naphthalene, is 71.12 ° C.

A solution is prepared by dissolving biphenyl into naphthalene. We can calculate the freezing point depression (ΔT) for naphthalene using the following expression.

\Delta T = i \times Kf \times m =   1 \times 6.90 \°C/m  \times 1.324m = 9.14  \°C

where,

  • i: van 't Hoff factor (1 for non-electrolytes)
  • Kf: cryoscopic constant
  • m: molality

The normal freezing point of naphthalene is 80.26 °C. The freezing point of the solution is:

T = 80.26 \° C - 9.14 \° C = 71.12 \° C

The freezing point of a 1.324 m solution, prepared by dissolving biphenyl into naphthalene, is 71.12 ° C.

Learn more: brainly.com/question/2292439

3 0
2 years ago
Without using Appendix B, predict the sign of ΔS° for(b) KBr(s)→ KBr(aq)
Volgvan

Since the sign is positive, the entropy increased by 88.48 J/K.

Examine the phases of the species present to determine whether a physical or chemical process will cause an increase or decrease in entropy. Keep in mind "Silly Little Goats" to aid you in telling.

[1 Sf K+1 + 1 Sf Br-1 (aq)] ([1Sf(KBr (s))])

[1(102.5) + 1(82.42)] - [1(96.44)] = 88.48 J/K

If the entropy has grown, we say that Delta S is positive, and if it has dropped, we say that Delta S is negative. Due to its ionic nature, KBr is soluble in water and causes the 'K(+)' ions to hydrate.

Learn more about Entropy here-

brainly.com/question/13146879

#SPJ4

8 0
1 year ago
Which one is a true statement about endothermic reactions? a: More heat is given off than is put into the reaction. b :The react
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A because it gets hot
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What is plate tectonics?
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Plate tectonics is the theory that Earth's crust is composed of many plates that are moving slowly over time. 

Your answer is D. :)
7 0
3 years ago
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True or False?<br><br> Nuclear fusion releases less energy than nuclear fission does.
elixir [45]
False

nuclear fusion produces more energy than a nuclear fission reaction.
8 0
3 years ago
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