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Molodets [167]
2 years ago
14

I NEED HELP PLEASE WITH THESE QUESTIONS :

Chemistry
2 answers:
Vesna [10]2 years ago
8 0

Answer:

They are all thermal energy.

Explanation:

They all use heat.

Luda [366]2 years ago
7 0

Answer:

1. Lighting a match uses chemical energy.

2. The evaporation of water is created from thermal energy.

3. Cooking an egg uses thermal energy to cook.

2. The condensation of water from vapor in the air uses thermal energy.

Explanation:

1. Lighting a match uses chemical energy which is then converted into thermal energy.

2. Evaporating water can be cause by hot items like the Sun which plays the most important role in our water cycle by evaporating water.

3. Cooking an egg uses thermal energy because it take the heat away from the object used to cook with it.

4. The condensation of water from vapor in the air is from cool surfaces.

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I need help with this question ​
VARVARA [1.3K]

Answer:

2.25×10¯³ mm.

Explanation:

From the question given above, we obtained the following information:

Diameter in micrometer = 2.25 μm

Diameter in millimetre (mm) =?

Next we shall convert 2.25 μm to metre (m). This can be obtained as follow:

1 μm = 1×10¯⁶ m

Therefore,

2.25 μm = 2.25 μm / 1 μm × 1×10¯⁶ m

2.25 μm = 2.25×10¯⁶ m

Finally, we shall convert 2.25×10¯⁶ m to millimetre (mm) as follow:

1 m = 1000 mm

Therefore,

2.25×10¯⁶ m = 2.25×10¯⁶ m /1 m × 1000 mm

2.25×10¯⁶ m = 2.25×10¯³ mm

Therefore, 2.25 μm is equivalent to 2.25×10¯³ mm.

6 0
3 years ago
Which of the following explains the characteristic melting and boiling points of ionic compounds? in ionic solids, the ions are
Wewaii [24]
FOLLOWING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
5 0
3 years ago
2 H2(g) + O2(g) 2 H2000
guajiro [1.7K]
A. 2 x 3 = 6 mol H2O
4 0
2 years ago
Confirmatory test of oxygen meaning?
Darya [45]

Answer:

Oxygen supports combustion so a good method of testing for oxygen is to take a glowing splint and place it in a sample of gas, if it re-ignites the gas is oxygen. This is a simple but effective test for oxygen.

Explanation:

4 0
3 years ago
Reasons why water is a good cooling agent in machines​
Fiesta28 [93]

Answer:

one reason is, Water is a very good liquid for cooling things down, for one thing there is plenty of it and it has also got a high specific heat capacity. This means that it can absorb a large amount of heat energy without getting too hot.


will not heat up or cool down very fast

Water has a high value of latent heat of vapourization so it has cooling properties.
hope this helps you. :)

Explanation:

4 0
1 year ago
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