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katrin2010 [14]
3 years ago
5

Jasmine is a cook, and she wants to buy new equipment. She is presented with dishes made of copper, clay, plastic, and glass. Sh

e selects the copper pot because she does most of her cooking on the stove. Which explains why she most likely chose copper?
A. Copper is shiny and reflects light, which will cook the food.
B. Copper is malleable and can be manipulated to cook food.
C. Copper is ductile and can be stretched to cook the food.
D. Copper is conductive and will absorb heat to cook the food.
Chemistry
2 answers:
Anon25 [30]3 years ago
7 0
Among all the choices given (copper, clay, plastic, and glass), only copper is metal. By being metallic, copper is then able to conduct heat well more than the other materials. This makes it more suitable for the the new equipment composition. Thus, the answer to this item is letter "D. Copper is conductive and will absorb heat to cook the food."
Tanzania [10]3 years ago
5 0

Answer:

D. Copper is conductive and will absorb heat to cook the food.

Explanation:

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Four acids are analyzed and there KA values are determined which of the following values represents the strongest acid
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x= the coefficients in front of the substance in the balanced chemical equation  

[H+]= the concentration of hydrogen ions  

[A-]= the concentration of the other ion that broke off from the H+  

[HA]= the un-disassociated acid concentration  

The higher the Ka value, the greater amount of disassociation of the reactants into products. As for acids, they will break down to form H+ ions. The more the H+ ions, the stronger acidity of the solution. Thus since A has the highest Ka value, that represents the strongest acid.  

You can determine the Ka value from a number of ways. If equilibrium concentrations are given of a certain acid solution, you can find the proportion of the concentration of ions to the concentration of the remaining HA molecules, using the equation above. Also, pH and KpH can be used in a number of ways. This gets more complicated and depends on the situation, and requires more advanced equations.


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3 years ago
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Alenkasestr [34]

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Explanation:

To calculate the concentration of Ca(OH)_2, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

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n_1=1\\M_1=0.06mol/dm^3\\V_1=11cm^3=0.011dm^3\\n_2=2\\M_2=?\\V_2=30cm^3=0.030dm^3         1cm^3=0.001dm^3

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1\times 0.06mol/dm^3\times 0.011dm^3=2\times M_2\times 0.030dm^3\\\\M_2=0.011mol/dm^3

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