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scoray [572]
3 years ago
8

As a car moves, the engine converts energy. The system consists of: the car (including engine and fuel), Earth, and surface of t

he road. Which choice best describes how energy is transformed in the system.
1- As fuel burns, chemical reactions occur within the fuel, breaking up molecules, forming new molecules, and absorbing energy from the environment. The energy absorbed allows parts of the engine to move. The energy from the surroundings is all transformed into chemical and mechanical energy.

2- As the fuel burns, chemical reactions occur within the feud, breaking up molecules, forming new molecules. And releasing energy. The energy released allows part of the engine to move. The chemical energy is all transformed into mechanical energy.

3- As the fuel burns, chemical reactions occur within the fuel, breaking up molecules, forming new molecules, and releasing energy. The energy is released as heat, and allows parts of the engine to move. The chemical energy is transformed into thermal energy.

4- As the fuel burns, chemical reactions occur within the fuel, breaking up molecules, forming new molecules, and releasing energy. The energy released allows parts of the engine to move. The chemical energy is all transformed into thermal and mechanical energy.
Chemistry
1 answer:
katen-ka-za [31]3 years ago
7 0

Answer:

I believe your answer will be 3--

As the fuel burns, chemical reactions occur within the fuel, breaking up molecules, forming new molecules, and releasing energy. The energy is released as heat, and allows parts of the engine to move. The chemical energy is transformed into thermal energy.

Explanation:

Hope this helps you!!!

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when an electric kettle containing cold water is switched on, the water in it starts boiling after a few minutes. what is the so
Virty [35]
The source of heat energy would be the electrical energy
By this i mean that the electric kettle converts the electrical energy from the outlet into heat energy
6 0
3 years ago
On a caterpillar's map, all distances are marked in millimeters. The caterpillar's map shows that the distance between two milkw
pychu [463]

Answer:

0.004012km

Explanation:

Problem:

Conversion of millimeters(mm) to Kilometers:

value given = 4012mm

Here, we are converting from a submultiple unit to a multiple unit.

Millimeter depicts 10⁻³m and kilometer stands for 10³m

Now, we must find how many exponents will take us from 10⁻³ to  10³

careful examination shows that if we multiply a power of 10⁶ to 10⁻³ it will give a 10³:

   i.e 10⁻³ x 10⁶ = 10⁻³⁺⁶ = 10³

Therefore,

       10⁶mm = 1km

      4,012mm = \frac{4012}{1000000} = 0.004012km

4 0
3 years ago
What mass of calcium hydroxide is formed when 10.0g of calcium oxide reacts with 10.0g of water?
nexus9112 [7]

The mass of calcium hydroxide that is formed when 10.0 g of CaO reacts with  10.0 g of water is 13.024 grams


calculation

from the equation

CaO + H2O → Ca(OH)2,

 1 moles of CaO reacted with 1 moles of H2O to form 1 moles of Ca(OH)2

find the moles of each reactant

moles=mass/molar mass

moles of CaO= 10 g/56 g/mol=0.179 moles

moles of H2O = 10 g/18 g/mol 0.556  moles

CaO is the limiting reagent  therefore by use of mole ratio of CaO:Ca(OH)2 which is 1:1 moles of Ca(OH)2 is = 0.179 moles

mass= moles x molar mass

= 0.176 moles x  74 g/mol = 13.024  grams

7 0
4 years ago
The crack shown in the lithosphere was created by the movement of two or more tectonic plates. What is this crack called
nikitadnepr [17]

Answer:

The lithosphere is made up of pieces of tectonic plates. These plates are constantly changing and move towards the mantle. Non-stop movement of tectonic plates causes stress on the earth's outermost layer i.e,the crust. When these stresses extends it leads to cause cracks called faults.

Explanation:

4 0
3 years ago
Where are the electrons inside an atom?
Nataly [62]

Answer: B.They are arranged in energy levels

Explanation: Electrons orbit around the nucleus of an atom, and are not spread around equally throughout an atom because there are a different amount of electrons that can fit in each energy level or electron shell (both are the same thing). For example the first energy level can hold up to 2 electrons, the second shell can hold up to 8 electrons, the third can hold up to 18, and so on represented by the equation 2(n^2)

7 0
3 years ago
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