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KIM [24]
3 years ago
14

I need scientific reasoning to support my hypothesis

Chemistry
2 answers:
aleksandr82 [10.1K]3 years ago
8 0
Because the lamp is more than 32 degrees , and anything freezing below 32 degrees that touches more than 32 degrees will melt.
White raven [17]3 years ago
7 0
Ice will melt under the lamps on high Lux because if the temperature is above 32 degree Celsius.
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Rocks formed by changes in heat and pressure or the presence of hot
pantera1 [17]

The answer would be: Igneous Rocks

7 0
4 years ago
How much energy would be released if 450.0 g of the substance completely reacted with oxygen?
SOVA2 [1]

Answer:

1.1853 kJ

Explanation:

4 0
4 years ago
A sample of neon gas has a volume of 5.0 mL at a pressure of 1.50 atm. What is the pressure exerted by the gas if the volume is
Ivan

Answer:

p2 = .75 atm

Explanation:

p1 v1  = p2 v2

5 * 1.5  = p2 10    

5 0
2 years ago
Balance the following redox reaction in basic solution. Cl ⒠(aq) + MnO ⒠4 (aq) → Cl 2 (g) + MnO 2 (s)
FinnZ [79.3K]

6\; \text{Cl}^{-} \; (aq) + 2\; \text{MnO}_4^{-} \; (aq)  + 4 \; \text{H}_2 \text{O} \; (l) \to 3\; \text{Cl}_2 \; (g) + 2\; \text{MnO}_2 \; (s) + 8\; \text{OH}^{-} \; (aq)

<h3>Explanation</h3>
  • The oxidation state of the manganese atom \text{Mn} changes from +7 as in \text{MnO}_4^{-} to +4 as in \text{MnO}_2.
  • There are one \text{Mn} atom in each \text{MnO}_4 ion.
  • Reducing each \text{MnO}_4^{-} ion would thus consume three electrons.
  • Similarly, the oxidation state of the chlorine atom \text{Cl} changes from -1 as in \text{Cl}^{-} to 0 as in \text{Cl}_2.
  • It takes two \text{Cl}^{-} ions to produce one \text{Cl}_2 molecule.
  • Oxidizing every two \text{Cl}^{-} would thus produce one \text{Cl}_2 while releasing two electrons.

Three \text{Cl}_2 molecules contain six chlorine atoms. Three \text{Cl}_2 would thus correspond to six \text{Cl}^{-} ions.

Combining six \text{Cl}^{-}, two \text{MnO}_4^{-} ions, three \text{Cl}_2 ions, and two \text{MnO}_2 would balance the changes in oxidation state.

6\; \text{Cl}^{-} \; (aq) + 2\; \text{MnO}_4^{-} \; (aq)  \to 3\; \text{Cl}_2 \; (g) + 2\; \text{MnO}_2 \; (s) (NOT BALANCED)

Still, the product side lacks four oxygen atoms.

  • In an acidic environment, oxygen atoms would combine with protons to produce water.
  • In a basic environment (like this one,) there are nearly no protons for oxygen atoms to combine with. Oxygen atoms will likely combine with water to produce hydroxide ions.

Each oxygen atom combine with a water molecule to produce two hydroxide ions. Adding four water molecules and eight hydroxide ions would balance the equation.

5 0
3 years ago
A heterogeneous mixture is one in which substances are evenly distributed and have a uniform composition
Sati [7]
If you’re asking if this is true or false, it is false . A HOMOGENEOUS mixture is one the where the substances are evenly distributed and have a uniform composition, while a HETEROGENEOUS mixture is uneven and the substances are part from each like oil and water.
7 0
3 years ago
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