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Alika [10]
3 years ago
9

Why is it important for the mass to be measured before measuring the volume​

Chemistry
2 answers:
astraxan [27]3 years ago
8 0

Answer:

sorry if wrong

Explanation:

Answer:

mass of the solid is measured before measuring its volume to find the density

Sauron [17]3 years ago
6 0

Answer:

So you can calculate the density.

Explanation:

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Answer:

Explanation:

Adiabatic and isothermal system - an adiabatic process, in which no heat flows into or out of the gas because its container is well insulated, Q = 0. If there is also no work done, i.e. a free expansion, there is no change in internal energy. For an ideal gas, this means that the process is also isothermal.

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Solute S has a partition coefficient of 6.2 between water (phase 1) and hexane (phase 2). 74.0 mL solution of S in water is extr
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Explanation:

The given data is as follows.

      Partition coefficient, K = 6.2

      Volume of phase 1, V_{1} = 74.0 mL

      Volume of phase 2, V_{2} = 17.0 mL

So, after one extraction fraction of solute remaining is given as follows.

              q = \frac{V_{1}}{V_{1} + KV_{2}}

After 3 times extraction, fraction of S remaining is as follows.

              q = [\frac{V_{1}}{V_{1} + KV_{2}}]^{3}

Putting the given values into the above formula as follows.

               q = [\frac{V_{1}}{V_{1} + KV_{2}}]^{3}

                  = [\frac{74.0 ml}{74.0 ml + 6.2 \times 17.0 ml}]^{3}

                  = [\frac{74.0 ml}{179.4 ml}]^{3}

                  = 0.0699

Thus, we can conclude that the fraction of S remaining in the aqueous phase is 0.0699.

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