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Alex787 [66]
3 years ago
9

Which would be the first of the two magnetic in the mixture to be melted? A. Copper B. Iron C. Nickel D. Tin

Chemistry
1 answer:
joja [24]3 years ago
7 0

Answer:

tin.

Explanation:

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What is the ratio of lactic acid (Ka = 1.37x^10-4) to lactate in a solution with pH =4.29
hram777 [196]

Henderson–Hasselbalch equation is given as,

                                         pH  =  pKa  +  log [A⁻] / [HA]   -------- (1)

Solution:

Convert Ka into pKa,

                                         pKa  =  -log Ka

                                         pKa  =  -log 1.37 × 10⁻⁴

                                         pKa  =  3.863

Putting value of pKa and pH in eq.1,

                                         4.29  =  3.863 + log [lactate] / [lactic acid]

Or,

                   log [lactate] / [lactic acid]  =  4.29 - 3.863

                   log [lactate] / [lactic acid]  =  0.427

Taking Anti log,

                             [lactate] / [lactic acid]  =  2.673

Result:

           2.673 M  lactate salt when mixed with 1 M Lactic acid produces a buffer of pH = 4.29.

6 0
3 years ago
What is the graph of the orange line and is it a positive or negative connotation
dimulka [17.4K]

Answer:

Positive

Explanation:

4 0
3 years ago
According to the ideal gas law, increasing the volume of a closed reaction container decreases the thermal energy because the
hichkok12 [17]

Answer:

b is ur answer the temputer does increase

Explanation:

8 0
3 years ago
If 500g of copper melts at 1085°C, at what temperature would 250g of<br> copper melt?
Alex787 [66]

Answer:

the copper would melt at the same temperature no matter how much quantity there is so 1085

Explanation:

6 0
2 years ago
Consider the work of Thomson, Rutherford, and Bohr. In your opinion, which was the most important and why? Be sure to state what
kobusy [5.1K]
The two of them both made models of the current atom, which was very excellent because now we could imagine how an atom would look.  I would say that the best one was the electron orbital configuration because we needed to know what valence electrons are. 
4 0
3 years ago
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