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defon
3 years ago
14

1. A cube of iron at 20.°C is placed in contact with a cube of copper at 60.°C. Which statement describes the initial flow of he

at between the cubes?
Chemistry
2 answers:
4vir4ik [10]3 years ago
4 0

Answer:


D) Heat flows from the copper cube to the iron cube.  


Step-by-step explanation:


The reason comes from the second law of thermodynamics:


Heat energy will flow spontaneously from an area of high temperature to one of low temperature.


When you bring two objects of different temperature into contact, heat energy always moves from the hotter to the cooler object.


The copper cube is hotter than the iron, so heat flows from the copper cube to the iron cube.


here hope this helps


enot [183]3 years ago
3 0

Please mark brainiest!!!

D) Heat flows from the copper cube to the iron cube.  

The reason comes from the second law of thermodynamics:


Heat energy will flow spontaneously from an area of high temperature to one of low temperature.


When you bring two objects of different temperature into contact, heat energy always moves from the hotter to the cooler object.


The copper cube is hotter than the iron, so heat flows from the copper cube to the iron cube.

Hope this helps!!

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Answer:

Energy

Explanation:

Heat is a form of energy.

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3 years ago
The reaction that produces cellular energy in plants is called?
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Atp or the mitchodria

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3 years ago
Cacodyl, which has an intolerable garlicky odor and is used in the manufacture of cacodylic acid, a cotton herbicide, has a mass
Papessa [141]

Answer:

The molecular formula of cacodyl is C₄H₁₂As₂.

Explanation:

<u>Let's assume we have 1 mol of cacodyl</u>, in that case we'd have 209.96 g of cacodyl and the<u> following masses of its components</u>:

  • 209.96 g * 22.88/100 = 48.04 g C
  • 209.96 g * 5.76/100 = 12.09 g H
  • 209.96 g * 71.36/100 = 149.83 g As

Now we convert those masses into moles:

  • 48.04 g C ÷ 12 g/mol = 4.00 mol C
  • 12.09 g H ÷ 1 g/mol = 12.09 mol H
  • 149.83 g As ÷ 74.92 g/mol = 2.00 mol As

Those amounts of moles represent the amount of each component in 1 mol of cacodyl, thus, the molecular formula of cacodyl is C₄H₁₂As₂.

3 0
2 years ago
A 2.40 kg block of ice is heated with 5820 J of heat. The specific heat of water is 4.18 J•g^-1•C^-1. By how much will it’s temp
MrMuchimi

Answer: The temperature rise is 0.53^0C

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q=m\times c\times \Delta T

Q = Heat absorbed by ice = 5280 J

m = mass of ice = 2.40 kg = 2400 g   (1kg=1000g)

c = heat capacity of water = 4.18J/g^0C

Initial temperature  = T_i

Final temperature = T_f  

Change in temperature ,\Delta T=T_f-T_i=?

Putting in the values, we get:

5280J=2400g\times 4.18J/g^0C\times \Delta T

\Delta T=0.53^0C

Thus the temperature rise is 0.53^0C

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3 years ago
Rank the following compounds in order of decreasing acid strength using periodic trends.Rank the acids from strongest to weakest
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HBr>H2S>H2Se>BH3 so basically

1. HBr

2. H2S

3. H2Se

4. BH3

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3 years ago
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