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vlada-n [284]
3 years ago
15

What one of these reactions are a combustion a. Burning wood b. Decomposition of water c. Production of plants with the suns ene

rgy d. Rotting fruits and vegetables
Chemistry
2 answers:
sineoko [7]3 years ago
6 0

Combustion involves with heat. The answer is burning wood.

tatiyna3 years ago
4 0

C.Production of plants with the suns energy.

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Select all the correct answers.
Andrei [34K]

Scientists use scientific notation to communicate extremely small measurements. Hence, option A is correct.

<h3>What scientific notation?</h3>

Scientific notation is a way of writing very large or very small numbers.

Scientists use scientific notation to represent very small or very large numbers because this notation increases the  

  • accuracy of measured quantities.

  • convenience in using the numbers.

  • the number of significant figures.

  • precision of measurements.

Hence, option A is correct.

Learn more about the scientific notation here:

brainly.com/question/18073768

#SPJ1

4 0
2 years ago
5.00 L of air at 750 mmHg pressure was compressed into a 3.00 L steel cylinder. What is the final pressure? (round to significan
kozerog [31]

Answer:

P2 = 1250mmHg

Explanation:

V1 = 5.0L

P1 = 750mmHg

V2 = 3.0L

P2 = ?

According to Boyle's law, the volume of a fixed mass of gas is inversely proportional to its pressure provided that temperature remains constant.

P = k/V k = P*V

P1*V1 = P2*V2 = P3*V3 =........=Pn*Vn

P1 *V1 = P2 * V2

Solve for P2

P2 = (P1 * V1) / V2

P2 = (750 * 5.0) / 3.0

P2 = 3750 / 3

P2 = 1250mmHg

The final pressure of the gas is 1250mmHg

5 0
3 years ago
What are white spot on the nail​
svetoff [14.1K]

Answer:

Leukonychia is a condition where white lines or dots appear on your finger or toenails. This is a very common issue and entirely harmless. Many healthy adults have these spots at some point in their lives, so developing them is likely not a sign of a serious medical condition.

4 0
2 years ago
Read 2 more answers
Which correctly lists the types of matter, in terms of their atoms, in order from least tightly packed to most tightly packed? s
alukav5142 [94]

Answer:

gas, liquid, solid

Explanation:

As you go from gas to solid, the atoms get closer together and the kinetic energy decreases.

3 0
3 years ago
Read 2 more answers
Explain how an element that does not react easily with other elements can be useful.
BaLLatris [955]
Elements that are unreactive can be useful for 'isolating' other volatile elements. For example, an element may be highly reactive with oxygen, so keeping it in air is not a safe option. In such cases, it may be useful to have a noble gas to store the element safely and ensure its stability. It may also have a purpose in experiments where it may act as a controlling agent or a container for the other reactions. 
5 0
3 years ago
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