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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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Rama09 [41]

Answer:

c,e,f

Explanation:

Judging by what i tried to find out about this reaction, it seems that won't take place, though it could be wrong.

7 0
3 years ago
How many moles of water are in a beaker with 50 mL?
tatiyna

Answer:

Number of moles = 2.8 mol

Explanation:

Given data:

Number of moles of water = ?

Volume of water = 50 mL

Density of water = 1.00 g/cm³

Solution:

1 cm³ =  1 mL

Density = mass/ volume

1.00 g/mL = mass/ 50 mL

Mass = 1.00 g/mL× 50 mL

Mass = 50 g

Number of moles of water:

Number of moles = mass/molar mass

Number of moles = 50 g / 18 g/mol

Number of moles = 2.8 mol

5 0
3 years ago
How many helium atoms are there in a helium blimp containing 539kg of helium
MaRussiya [10]
Atomic mass of helium is 4.002642g/mol 
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3 0
3 years ago
Read 2 more answers
Consider a possible triatomic molecule containing a nitrogen, oxygen, and fluorine atoms for the following questions.
STALIN [3.7K]

Answer:

a) nitrogen

b) nitrogen =5

Oxygen = 6

Fluorine =7

Explanation:

Usually, if we have two or more elements in a compound, the central atom in the compound is the atom having the least value of electro negativity.

If we consider fluorine, oxygen and nitrogen; nitrogen is the least electronegative of the trio hence it should be the central atom of the triatomic molecule.

The number of valence electrons on the valence shell of each atom is shown below;

nitrogen =5

Oxygen = 6

Fluorine =7

5 0
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How many neutrons are in an atom of molybdenum-96 (Mo-96)?
Sergio [31]
There are 54 neutrons in molybdenum -96
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