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Hatshy [7]
3 years ago
11

Which of the following happens to a molecule of an object when the object is heated? (1 point)

Chemistry
1 answer:
vfiekz [6]3 years ago
7 0

Answer:

They get more energy, so they vibrate!

Explanation:

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A student designed an experiment to test the effect on the magnitude of the magnetic field that is generated around the wire loo
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Answer: C ) the student’s dependent variable is the magnitude of the magnetic field that is generated

E ) the student’s independent variable is the amount of current that is being passed through the wire

5 0
3 years ago
Which metal will react spontaneously with Cu2+ (aq) at 25°C?
Gwar [14]

Answer:

Mg  

Explanation:

The standard reduction potentials are

                                              <u>E°/V </u>

Au³⁺(aq ) + 3e⁻  ⟶  Au(s);     1.42

Hg²⁺(aq)  + 2e⁻  ⟶  Hg(l);     0.85

Ag⁺(aq)    +   e⁻  ⟶  Ag(s);    0.80

Cu²⁺(aq)   + 2e⁻ ⟶  Cu(s);   0.34

Mg2+(aq) + 2e- ⟶  Mg(s);   -2.38

The more negative the standard reduction potential, the stronger the metal is as a reducing agent.

Mg is the only metal with a standard reduction potential lower than that of Cu, so

Only Mg will react spontaneously with Cu²⁺.

 

5 0
3 years ago
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Hot air balloons work due to a current moving heat energy around within the balloon. which heat energy transfer process is happe
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Convection.

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3 years ago
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Which list of elements is arranged in order of increasing electronegativity?
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K, ca, sc is the right answer. Take a look at table S of your chemistry reference table. 
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In the laboratory you dissolve 15.9 g of barium chloride in a volumetric flask and add water to a total volume of 375 ml. what i
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3 years ago
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