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Mrrafil [7]
3 years ago
11

When objects of two different temperatures are in contact, what happens?

Chemistry
1 answer:
abruzzese [7]3 years ago
7 0

Answer:

If two objects at different temperatures are brought in contact with each other, energy is transferred from the hotter to the colder object until equilibrium is reached and the bodies reach thermal equilibrium.

Explanation:

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Explain why photosynthesis and respiration are considered opposite processes when it comes to carbon.
lyudmila [28]
Respiration and Photosynthesis is different form each other because photosynthesis removes CO2 while respiration puts back CO2 

I hoped this helped!
3 0
3 years ago
Look at the reaction below.
HACTEHA [7]
The acid is H2SO4(an)
6 0
3 years ago
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Which pair of elements do you expect to be most similar in their chemical properties? a. AgAg and KrKr b. OO and SS c. PbPb and
Taya2010 [7]

Answer: Option (b) is the correct answer.

Explanation:

Chemical properties are defined as the properties which tend to chemical composition of a substance. Neutral elements with similar number of valence electrons tend to show similar chemical properties as these have same reactivity which actually affects their chemical properties.

This means that elements of the same group tend to show similar chemical properties.

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8 0
3 years ago
at a particular temperature, asample of pure water has a Kw of 1.7x10-12. what is the hydroxide concentration of this sample
Lena [83]

Answer:

Hydroxide concentration of the sample is 1.3x10⁻⁶M

Explanation:

The equilibrium constant of water, Kw, is:

H₂O(l) ⇄ H⁺(aq) + OH⁻(aq)

Kw is defined as:

Kw = 1.7x10⁻¹² = [H⁺] [OH⁻]

As the sample is of pure water, both H⁺ and OH⁻ ions have the same concentration because come from the same equilibrium, that is:

[H⁺] = [OH⁻]

We can write the Kw expression:

1.7x10⁻¹² = [OH⁻] [OH⁻]

1.7x10⁻¹² = [OH⁻]²

1.3x10⁻⁶M = [OH⁻]

<h3>Hydroxide concentration of the sample is 1.3x10⁻⁶M</h3>
6 0
3 years ago
The state of matter of a material depends on its
kotegsom [21]

Answer:

Tempature

Explanation:

Matter can move between any two states (or phases) of matter depending on the pressure and temperature conditions. ... The temperature of the melting and boiling points depend on the identity of the substance and the atmospheric pressure.

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8 0
4 years ago
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