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Aleks04 [339]
3 years ago
5

I need help asap please help me

Chemistry
2 answers:
alexandr1967 [171]3 years ago
7 0
Population and adaption
xeze [42]3 years ago
5 0
Population, adaptation
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The speed of sound in air is four times as its speed in steel true or false?​
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Answer:

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Explanation:

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A solution in which more solute can be dissolved is called a(n) ???? solution
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Which compound in each pair is more soluble in water?(a) Magnesium hydroxide or nickel(II) hydroxide
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What is called compound?

  • In chemistry, a compound is a substance made up of two or more different chemical elements combined in a fixed ratio.
  • When the elements come together, they react with each other and form chemical bonds that are difficult to break.
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a) Mg(OH)2 or Ni(OH)2.

Mg(OH)2 1.8×10–11

Ni(OH)2 2.0×10–15

Clearly, Ksp value for Mg(OH)2 is higher , meaning it is MUCH MORE SOLBULE than Nickel

therefore, choose Mg(OH)2.

b)

PbS 3×10–28

CuS 6×10–37

Clearly, PbS is much more soluble than CuS

since Ksp is higher .

c)

Ag2SO4 1.4×10–5

MgF2 3.7×10–8

Clearly, Ag2SO4 has higher Ksp, so it is much more soluble.

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Which symbol can be used to indicate the pressure at which a chemical reaction is carried out
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atm for standardized pressure
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The kc is a representation of how fast the reaction proceeds to their products when it has achieved equilibrium. The activation energy for the forward and the one for the reverse reaction are similar because they attained chemical equilibrium. A chemical equilibrium happens when both of the reactant and products achieve the same concentration. An example is the process of melting and freezing. Melting and freezing for a given substance occurs at the same temperature. Because the temperature at which the solid starts to melt is also the temperature at which the liquid starts to freeze. They are at chemical equilibrium.

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