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iogann1982 [59]
3 years ago
8

how can you use terms such as thermal energy, particles, motion, and flow to explain the movement of heat in our world

Chemistry
1 answer:
tatiyna3 years ago
4 0

Answer:  Thermal energy is the kinetic energy of particles and heat is the term used to describe how this energy may flow to other systems, such as in a radiator.

Explanation:  Molecules have a level of kinetic energy that can be measured by temperature.  Higher temperatures result in more rapid and frequent collisons of particles in motion.  Heat is the term used to measure the quantity of vibration energy in a given system.  The SI unit for heat energy is the Joule.  The water molecules in a pot of boiling water have a kinetic energy sufficient for them to break away from other water molecules and become gaseous (boiling point).  The heat energy in 1 liter of water at 95C can be calculated in terms of Joules/liter, based on the specific heat of water (e.g., in units of J/gC).  This heat can flow to other systems.  A home boiler heater unit heats water tha can be pumped around the house ehre it will flow from radiators into thje surrounding air.

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How many joules of energy would it take to raise the temperature of 2.5 grams of magnesium metal from
garik1379 [7]

Answer:

Q = 63.75J

Explanation:

Mass = 2.5g

Initial temperature (T1) = 25°C

Final temperature (T2) = 50°C

Specific heat capacity of Mg = 1.020J/g°C

Heat energy = ?

Heat Energy (Q) = mc∇T

Q = heat energy

M = mass of substance

C = specific heat capacity of substance

∇T = change in temperature = T2 - T1

Q = mc∇T

Q = mc(T2 - T1)

Q = 2.5 × 1.020 × (50 - 25)

Q = 2.55 × 25

Q = 63.75J

The heat energy required to raise magnesium metal from 25°C to 50°C is 63.75J

4 0
3 years ago
Fill in the coefficients that will balance the following reaction:
dalvyx [7]

Answer:

C₃H₈₍g₎ + 5O₂₍g₎→  3CO₂₍g₎ + 4H₂O₍l₎

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Answer:

C. atomic mass

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He published a table where he proposed relative atomic weight of six atoms. In his honor, standardized unit for atomic weight is called dalton (Da) and weighs 1/12 of carbon atom weight.

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