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Oksana_A [137]
2 years ago
5

What type of reaction is combustion of coal? A. endothermic B. physical C. heat-absorbing D. exothermic

Biology
2 answers:
nydimaria [60]2 years ago
4 0
Exothermic - hope that helps x
Leni [432]2 years ago
4 0

Answer:

Redox Reaction

Explanation:

Burning coal is a chemical change called combustion. A combustion is the chemical reaction (redox reaction) of coal with oxygen O2. It is exothermic, which means it releases energy : hence the heat.

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Someone please help me
lbvjy [14]

Answer:

Option B: Molecule 2

Explanation:

'Equilibrium of a molecule inside and outside a cell' means that there are similar numbers of that molecule on the inside and the outside. (hence 'equilibrium')

The number of each molecule is as follows:

Molecule 1 - Inside: 3, Outside: 5

Molecule 2 - Inside: 2, Outside: 3

Molecule 3 - Inside: 1, Outside: 5

Molecule 4 - Inside: 7, Outside: 4

Therefore the correct option is option b. 2

This is because the number of molecules inside the cell and outside the cell are the closest together, most similar out of all the molecules.

Hope this helped!

5 0
2 years ago
PLEASE HELP!!
Lena [83]
Room temperature..type of plant..too much sunlight..too much water..or food..thats all i got.
7 0
3 years ago
Read 2 more answers
Two technicians are discussing a stepped ECT circuit. Technician A says that the sensor used for a stepped circuit is different
icang [17]

Answer:B) Technician B

Explanation:ECT(ENGINE COOLANT TEMPERATURE) is a sensor present in the coolant Temperature sensor that checks and transmits the Temperature to the ECM(engine control module). This helps to regulate the fueling time, speed and other factors that can impact the Temperature of the engine.

Stepped ECT circuits require different Internal resistance inside the PCM(power-train control module) is a combined control which includes the ECU(ENGINE CONTROL UNIT) AND TCU(TRANSMISSION CONTROL UNIT). The same sensor can be used for both the stepped circuit and a circuit that is not stepped.

7 0
2 years ago
Does inner or outer plants have a rocky composition.
PIT_PIT [208]

Answer:

Do you mean planets?

if so,The heavy rocky particles within the inner part of the disk formed planetesimals and eventually, inner planets. In our solar system, the four innermost planets Mercury, Venus, Earth and Mars are known as inner planets. They lie inside the asteroid belt. They have volcanoes and valleys and are very hot compared to outer planets.Inner planets are much smaller than the outer planets, and are rocky with an iron core.

Hope that helps!

4 0
2 years ago
Write the formula that shows the release of energy by the mitochondria
Pie

Answer:

Mitochondria is the organelle where cellular respiration takes place. Cellular respiration can be described as a process in which oxygen and glucose are converted into carbon dioxide and water along with the release of ATP. This reaction can be written as:

Glucose + Oxygen → Carbon dioxide + Water + ATP molecules

C6H12O6 +   6O2→  6CO2 +  6H2O +  ATP

The ATP made can be broken down so that energy is released.

ATP + H2O → ADP + Pi + free energy

6 0
3 years ago
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