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seraphim [82]
2 years ago
11

65 ml of a 1.3 m solution is dilluted to a total volume of 208 ml. a 104 ml portion of that solution is dilluted by adding 109 m

l of water. what is the concentration? assume the volumes are additive ​
Chemistry
1 answer:
storchak [24]2 years ago
8 0
65ml x 1.3 molar = 0.0845 moles solution #1

0.0845 moles / .208 L = 0.4 M

0.4M × 104 ml / 213 ml = .20 M after sig figs
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Define thermal and electrical conductivity, solubility, magnetism, melting and boiling points
Anon25 [30]

Answer:

<u>thermal conductivity:</u> the rate at which heat is transferred by conduction through a unit cross-section area of a material, when a temperature gradient exits perpendicular to the area

<u>electrical conductivity:</u> the measure of the amount of electrical current a material can carry or it's ability to carry a current

<u>solubility:</u> the ability to be dissolved, especially in water

<u>magnetism:</u> a physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects

<u>melting point:</u> the temperature at which a given solid will melt.

<u>boiling point:</u> the temperature at which a liquid boils and turns to vapor

Explanation:

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2 years ago
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Katarina [22]

Answer:

F = 800 N

Explanation:

Given data:

Mass = 80 Kg

Acceleration = 10 m/s²

Force = ?

Solution:

Formula:

<em>F = m × a </em>

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m = mass

a = acceleration

Now we will put the values in formula:

<em>F = m × a </em>

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6 0
3 years ago
Calcula la cantidad de gramos que hay en 12,5 mol de NaCl (Masa Na: 23,0; Cl: 35,5).
Anon25 [30]

Answer:

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Explanation:

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From the formula;

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Number of moles of sodium chloride= 12.5 moles

Mass of sodium = The unknown

Molar mass of sodium chloride= 58.5gmol-1

Mass of sodium chloride= number of moles × molar mass

Mass of sodium chloride= 12.5 × 58.5

Mass of sodium chloride= 731.25 g

4 0
3 years ago
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Alex787 [66]
The answer has to be D
8 0
2 years ago
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Explanation:

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