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ludmilkaskok [199]
3 years ago
9

Mention three sources of light​

Chemistry
1 answer:
Kitty [74]3 years ago
7 0

Answer:

Hey

You.

You emit infered light via heat.

The sun

The sun emits <em><u>all</u></em> frequincies of light, but mostly yellow light.

Your microwwaves

As your food gets hotter the microwwaves shake up the water molecules because they are the perfect frequincy to do so.

Wbob1314

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the reaction of aluminum with chlorine gas is shown 2Al + 3Cl2 -&gt; 2AlCl3 based on this equation how many molecules of chlorin
Vanyuwa [196]

45 molecules of chlorine gas (Cl₂) are needed to react with 30 atoms of aluminum (Al)

The balanced equation for the reaction is given below:

2Al + 3Cl₂ —> 2AlCl₃

From the balanced equation above,

2 atoms of Al required 3 molecules of Cl₂.

With the above information, we can determine the number of molecules of Cl₂ needed to react with 30 atoms of Al. This can be obtained as follow:

From the balanced equation above,

2 atoms of Al required 3 molecules of Cl₂.

Therefore,

30 atoms of Al will require = \frac{30 * 3}{2}\\ = 45 molecules of Cl₂.

Thus, 45 molecules of chlorine gas (Cl₂) are needed to react with 30 atoms of aluminum (Al)

Learn more: brainly.com/question/24918379

3 0
2 years ago
The temperature of evaporation is much higher for water than for alcohol. Without knowing more about the chemistry of alcohol, w
Valentin [98]

Answer:

Fewer hydrogen bonds form between alcohol molecules. As a result, less heat is needed for alcohol molecules to break away from solution and enter the air.

Explanation:

Hydrogen bonding is a kind of intermolecular interaction that occurs when hydrogen is bonded to a highly electronegative atom.

Both water and alcohols exhibit hydrogen bonding. However, alcohols exhibit fewer hydrogen bonds than water.

As a result of this, the temperature of evaporation is much higher for water than for alcohol because hydrogen bonds hold water molecules more closely than alcohol molecules are held.

8 0
3 years ago
Please help me! 45 points each!!
Sveta_85 [38]

Answer:

CH4+ 2Cl2→CH2Cl2+ 2HCl

Explanation:

mass is 132.8`125

as methane and dichlormethane has the same molar ration 1 to 1

mol of ch4 is 1.5625

so 1.5625 times mr of ch2cl2 is 132.8125

8 0
3 years ago
1. carbon cycle
marin [14]

Explanation:

1. carbon cycle

all of the physical processes and chemical reactions that result in the movement of carbon between the biosphere (living forms) and the geosphere (water, earth, and atmosphere)

  Carbon cycle is the cyclic movement of carbon in various form on earth. This process entails both physical and chemical processes that ensures that carbon moves in different spheres of the earth. Carbon is one of the most important element in life. It is the building block of most organic processes on earth.

2. carbon footprint

a calculation that considers an individual's contribution to the process of global warming based on activities leading to greenhouse gas production

Carbon footprint is important in mapping the quota of carbon emitted into the atmosphere

It is the amount of greenhouse gases contributed into the atmosphere by individuals.

3. global warming

an overall increase in world temperatures that may be caused by additional heat being trapped by greenhouse gases

   It is the overall increase in global temperature. It has severe consequences.

  Global warming results when greenhouse gases in the atmosphere traps outgoing radiation in an anomalous way.

4. greenhouse gas

components of the air mixture that trap infrared (heat) energy

 Greenhouse gases are gases that prevents long wave radiation from leaving the earth surface. They absorb the gases in turn, warming occurs on earth.

Learn more:

Greenhouse gases brainly.com/question/4580761

#learnwithBrainly

4 0
3 years ago
Tarnish on copper is the compound CuO. A tarnished copper plate is placed in an aluminum pan of boiling water. When enough salt
Jet001 [13]

Answer:  2.00 V

Explanation:

The balanced redox reaction is:

2Al+3Cu^{2+}\rightarrow 2Al^{3+}+3Cu

Here Al undergoes oxidation by loss of electrons, thus act as anode. Copper undergoes reduction by gain of electrons and thus act as cathode.

E^0=E^0_{cathode}- E^0_{anode}

Where both E^0 are standard reduction potentials.

Al^{3+}+3e^-\rightarrow Al E^0_{[Al^{3+}/Al]}=-1.66V

Cu^{2+}+2e^-\rightarrow Cu E^0_{[Cu^{2+}/Cu]}=0.340V

E^0=E^0_{[Cu^{2+}/Cu]}- E^0_{[Al^{3+}/Al]}

E^0=+0.34- (-1.66V)=2.00V

Thus the standard cell potential is 2.00 V

6 0
3 years ago
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