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Sladkaya [172]
2 years ago
12

Question 1-6

Chemistry
1 answer:
qaws [65]2 years ago
4 0

Answer:

Freezing point depression is a property of solutions where the solute lowers the normal freezing point of the solvent.

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Answer:GLACIERS  ARE MADE UP OF  FALLEN SNOW OVER MILLION YEARS, IN MOST OF POLAR REGIONS  IT TURNS TO ICE AND WILL FLOW DOWNWARDS AND OUTWARDS UNDER ITS OWN PRESSURE

AND THE LARGEST GLACIER IN THE WORLD IS 60 MILES WIDE AND AROUND  270 MILES LONG.

IT COVERS 10% OF EARTH'S TOTAL LAND

Explanation:

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Angle and number should be the correct answer

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prove me wrong

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What is the final acetate ion concentration when 69. g Ba(C2H3O2)2 is dissolved in enough water to make 970. mL of solution? The
mario62 [17]

Answer:

0.56M of acetate ions

Explanation:

Given parameters:

Mass of Ba(C₂H₃O₂)₂  = 69g

Volume of water  = 970mL  = 0.97dm³

Molar mass of Ba(C₂H₃O₂)₂ = 255.415g/mol

Unknown:

Concentration of acetate ion in the final solution = ?

Solution:

Let us represent the dissociation;

                Ba(C₂H₃O₂)₂  = Ba²⁺   + 2C₂H₃OO⁻

We see that 1M of will produce 2M of acetate ions

Now, let us find the molarity of the barium acetate;

            Molarity  = \frac{number of moles }{volume}

                Number of moles of Ba(C₂H₃O₂)₂ = \frac{mass}{molar mass}

                Number of moles  = \frac{69}{255.415}  = 0.27moles

     Molarity of Ba(C₂H₃O₂)₂ =  \frac{0.27}{0.97}   = 0.28M

since 1M of Ba(C₂H₃O₂)₂ will produce 2M of acetate ions

        0.28M of Ba(C₂H₃O₂)₂ will produce 2 x 0.28  = 0.56M of acetate ions

3 0
4 years ago
If nearly all scientist agree with a theory, it may be called______
AleksAgata [21]
A hypothesis or a law
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