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blagie [28]
3 years ago
10

How is air temperature usually measured?

Chemistry
2 answers:
andrew11 [14]3 years ago
8 0
Thermometer is thermometer
wel3 years ago
3 0

thermometer

search it up

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What has the lowest ionization erergy?
Svetach [21]

Answer:

Francium (Fr)

Explanation:

From the given choices, francium will have the lowest ionization energy.

Ionization energy is the energy required to remove the most loosely held electron within an atom.

The magnitude of the ionization energy depends on the characteristics of the atom in relation to its nuclear charge, atomic radius, stability etc.

  • Generally on the periodic table, ionization energy increases from left to right on the table
  • As you go from metals to non-metals and to gases, the value of the ionization energy increases steadily.
  • Down the group, the value reduces.
  • Since Francium is the most metallic of all the given choices, it has the highest ionization energy.
3 0
3 years ago
the heat of fusion of acetone is 5.7 kJ/mol. Calculate to two significant figures the entropy change when 6.3 mol of acetone mel
shtirl [24]

<u>Answer:</u> The entropy change of the process is 2.0\times 10^2J/K

<u>Explanation:</u>

To calculate the entropy change for different phase at same temperature, we use the equation:

\Delta S=n\times \frac{\Delta H_{f}}{T}

where,  

\Delta S = Entropy change

n = moles of acetone = 6.3 moles

\Delta H_{f} = enthalpy of fusion = 5.7 kJ/mol = 5700 J/mol    (Conversion factor:  1 kJ = 1000 J)

T = temperature of the system = -94.7^oC=[273-94.7]=178.3K

Putting values in above equation, we get:

\Delta S=\frac{6.3mol\times 5700J/mol}{178.3K}\\\\\Delta S=201.4J/K=2.0\times 10^2J/K

Hence, the entropy change of the process is 2.0\times 10^2J/K

4 0
3 years ago
When ammonium carbonate is heated, water, ammonia, and carbon dioxide are produced. what type of chemical reaction is occurring?
Delicious77 [7]
(NH4)2CO3----> H2O +2NH3+CO2
decomposition

5 0
2 years ago
If you eat 3.00 moles of sugar, how many molecules did you consume?
Anna71 [15]
1 mole is 6.02x 10^23 molecules

3 * 6.02*10^23 =1.806*10^24 molecules

3 0
3 years ago
At what point does sucrose actually become dissolved in the water?
Oksi-84 [34.3K]
Yes it does dissolve hope this helps
8 0
3 years ago
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