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AVprozaik [17]
3 years ago
10

The ka for hbro is 2.0x10-9. what is the ph of a.55m

Chemistry
1 answer:
Tamiku [17]3 years ago
5 0
pH stands for 'potential of Hydrogen'). A pH value is a number from 1 to 14, with 7 as the middle (neutral) point. Values below 7 indicate acidity which increases as the number decreases, 1 being the most acidic.
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Filtration can be used to separate mixtures based on
Amanda [17]
Filtration can be used to separate mixtures based on the size of their particle.

Filtration is a method to separate different molecule based on size. Filtration mostly used to separate solid substance in a liquid. To separate the molecule, you will need a tools that have smaller holes than the molecule size.
The example of usage of this method would be when you try to remove a substance from homogeneous solution using filter paper. The size of water molecule will be smaller than the paper so the water can pass through. But if the solute size is larger than the paper pore, it will be held and form a residue.

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3 years ago
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How are reactants converted to products in an elementary reaction?
daser333 [38]

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Atomos, molecules, ions or radicals.

Explanation:

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3 years ago
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¿por qué la conducción ocurre más lentamente en los gases que en los sólidos?​
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3 years ago
Cubes are three-dimensional square shapes that have equal sides. What is the density of a cube that has a mass of 12.6 g and a m
ratelena [41]

Answer:

A.  0.1828 g/cm³

Explanation:

Hi there,

Density's well known formula is Greek letter rho:   ρ =\frac{m}{V}= \frac{m}{a^3}    where m is the mass, and V is volume. Since the volume in question is a cube, the volume of a cube is simply the edge length V = a³

V = (4.1 cm)³ = 68.921 cm³

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5 0
3 years ago
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Please help (show work if needed)
vlada-n [284]

Basically, this figure represents scattering of alpha particles by the atoms of a gold foil.

  • Here, A represents that a few alpha particles are deflected through large angle. It shows that the nucleus of the atom is positively charged which repels the positively charged alpha particles and deflect them from their original path.
  • B represents that most alpha particles pass straight through the gold foil without any deflection from their original path. The reason is that there is a lot of empty space in the atom.
  • C represents that some alpha particles are deflected through small angles. The reason is same as that of A.

Hope you could understand.

If you have any query, feel free to ask.

3 0
3 years ago
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