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posledela
3 years ago
15

A student was given four unknown solutions. Each solution was checked for. conductivity and tested with. phenolphthalein. The re

sults are shown in the data table below
based on the data table which unknown solution could be 0.1 M NaOH
1.A. 2.B
3.C. 4.D
The table is that it talks about is in the picture attached

Chemistry
1 answer:
777dan777 [17]3 years ago
4 0

Answer: (3) C

Explanation:

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Answer:

Approximately 1.95 \times 10^{2}\; \rm J.

Explanation:

Look up the specific heat of gaseous neon:

c = 1.03 \; \rm J \cdot g^{-1} \cdot K^{-1}.

Calculate the required temperature change:

\Delta T = (37.9 - 20.0)\; \rm K = 17.9\; \rm K.

Let m denote the mass of a sample of specific heat C. Energy required to raise the temperature of this sample by \Delta T:

Q = c \cdot m \cdot \Delta T.

For the neon gas in this question:

  • c = 1.03\; \rm J \cdot g^{-1}\cdot K^{-1}.
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Calculate the energy associated with this temperature change:

\begin{aligned}Q &= c \cdot m \cdot \Delta T \\ &= 1.03\; \rm J \cdot g^{-1}\cdot K^{-1} \times 10.6\; \rm g \times 17.9\; \rm K \\ &\approx 1.95 \times 10^{2}\; \rm J\end{aligned}.

3 0
3 years ago
Does the temperature of the solvent (water) affect the rate of dissolving?​
gregori [183]
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Classify each of the following equations as synthesis, decomposition, or replacement.
Sonja [21]

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8 0
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The Tyndall effect is a simple process for identifying a compound.
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Therefore, Tyndall Effect is not a process used to identify compounds. 

I hope my answer has come to your help. Thank you for posting your question here in Brainly.


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4 0
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