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Ratling [72]
3 years ago
9

How does heat transfer between objects

Chemistry
1 answer:
pentagon [3]3 years ago
8 0

Answer:

Explanation:

       Heat can transfer between objects in two different ways. Generally, heat will travel from places of higher heat to places of lower heat.

       The first is conduction. This is when the object being heated and releasing heat are in direct contact. Not as much heat is lost in this process, since the thermal energy has nowhere else to go except for the object it is touching. An example would be putting a kettle on a hot stove, but it could also be grabbing a cold pole with your relatively warm hands.

       The second is convection. This is where heat is radiated into the air, and thus, transferred by the air, to another object. The actual heat that you feel is actually electromagnetic waves, and its transfer from an object is called electromagnetic radiation. Convection is the heat you feel from a near fire or a space heater. This is also why wind is present in our atmosphere.

       There is also radiation. This is caused from the burning or breaking down of a substance. This might come from the sun.

I hope I did enough to deserve the 45 points!

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When iron metal reacts with oxygen, the reaction can form Fe2O3. Write a balanced chemical equation for this reaction, and find
I am Lyosha [343]
<h3>Answer:</h3>

Balanced equation: 4Fe + 3O₂ → 2Fe₂O₃

Moles of oxygen gas = 9 moles

<h3>Explanation:</h3>

To answer the question;

  • We first write the balanced equation between iron metal and Oxygen
  • The balanced equation is given as;

4Fe + 3O₂ → 2Fe₂O₃

  • We are given 6 moles of Fe₂O₃

We are required to determine the number of moles of oxygen needed to form 6 moles of Fe₂O₃.

  • From the equation, 3 moles of oxygen gas reacts to produce 2 moles of Fe₂O₃
  • This means, the mole ratio of O₂ to Fe₂O₃ is 3 : 2

Therefore; Moles of O₂ = Moles of Fe₂O₃ × 3/2

Hence, moles of oxygen = 6 moles × 3/2

                                         = 9 moles

Thus, Moles of Oxygen needed is 9 moles

6 0
3 years ago
[
notsponge [240]

Answer:

gime fre points

Explanation:

fre points for me!

6 0
3 years ago
PLEASE HELP ASAP - WILL GIVE YOU BRAINIEST Can someone please help me figure out the correct answer to a science problem? I need
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independent variable: how much bread is there

dependant variable: temperature, location, time, size.

hypothesis, the one with the bread will be way more moist than the one without.

control group: no bread at all.

experimental group: brownies with bread

constants: same tupperware, placement, time, size.

Hoped this helped!

8 0
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When 4 moles of aluminum are allowed to react with an excess of chlorine gas, Cl2, how many moles of aluminum chloride are produ
Nat2105 [25]
2Al+3Cl2==>2AlCl3
(4mol Al)(2 mol AlCl3/2 mol Al)=4 mole AlCl3
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write a checklist with at least three entries for how you can evaluate whether scientific information is reliable
Lilit [14]

Answer:

Was the information obtained from government or academic websites? Was the information published in scientific journals, articles, books, and researches? Was the information published by advertisers?

Explanation:

If the first two questions are a yes and the third question is a no, your good to go.

8 0
3 years ago
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