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zheka24 [161]
3 years ago
5

Which is the first step in the dissolving process?

Chemistry
2 answers:
storchak [24]3 years ago
8 0

Answer:

The correct answer is option B, The solute molecules are carried into the solution

Explanation:

When a solute is added to a solvent it dissolves in it by occupying the space between the atoms/molecules of the solvent. This space between the atoms/molecules is called interstitial space. For example - when sugar(solute) is added to water (solvent), the atoms of sugar occupies the space between the molecules of water and thus the sugar dissolves without increasing the volume of the solution.

Margaret [11]3 years ago
4 0
The correct Answer Is : D
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A solution at 25 degrees Celslus 1.0*10^ -5 MH 3 O^ + . What the concentration of OH^ - in this solution?
dexar [7]

Answer:

D.

Explanation:

-log(1.0x10^-5) = pH

pH + pOH = 14 (rearrange it)

OH- = 10^-pOH = 1.0 x 10^-9

- Hope that helped! Let me know if you need further explantion.

7 0
3 years ago
HELPPP LOOK AT PICTURE
lina2011 [118]

Answer:

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Explanation:

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5 0
3 years ago
The element gallium has an atomic weight of 69.7 and consists of two stable isotopes gallium -69 and gallium -71. The isotope ga
BigorU [14]

Answer:

The answer to your question is Gallium-71 = 70.9202 amu

Explanation:

Gallium atomic weight = 69.7

Gallium-69 = 68.9 amu    abundance = 60.4%

Gallium-71 =     x                abundance = 39.6%  

To solve this problem just write an equation and solve it for the mass of gallium-71.

Equation

Gallium = Gallium-69(abundance) + Gallium-71(abundance)

Substitution

69.7 = (68.9)(0.604) + Gallium-71(0.396)

69.7 = 41.6156 + Gallium-71(0.396)

Gallium-71(0.396) = 69.7 - 41.6156

Gallium-71(0.396) = 28.0844

Gallium-71 = 28.0844/0.396

Gallium-71 = 70.9202 amu

3 0
3 years ago
A gas is enclosed in a cylinder fitted with a piston. The volume of the gas is 2.00 L at 0.524 atm. The piston is moved to incre
MAXImum [283]

Answer:0.20L

Explanation:

Data

P1 =0.524atm

V1=2L

P2=5.15atm

V2=?

Apply Boyle' law

P1V1 =P2V2

P2 =P1V1/P2

= 0.524x 2 /5.15

= 0.20 L

3 0
3 years ago
The volume of an object is 50cm3 and its mass is 150g. What is its density?
labwork [276]

Answer:

3g/cm3

Explanation:

density = mass/volume

150/50 = 3

4 0
3 years ago
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