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Zanzabum
3 years ago
9

What is an an example of a chemical reaction?

Chemistry
2 answers:
deff fn [24]3 years ago
6 0

Answer:

2

Explanation:

Number 1 wouldn't be because it is a physical change

Number 3 wouldn't be because it is a physical change, as well

Number 4 wouldn't be because it is a physical change, too.

Therefore, it is 3

Hopefully I helped!

-Lavander Vye

Anna11 [10]3 years ago
3 0

Answer:

nail rust!!!!!!!!!!!!!!!!!!

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Which interaction occurs when light goes into an object as heat energy?
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Interaction occurs when light goes into an object as heat energy is Absorbed light.

Absorbed light makes an object dark. Absorption of light is when the light is absorbed by the object and converts it into heat energy. The objects converts the wavelength of light into the larger wavelength of heat.  this makes the object warmer and produced energy. Absorption depends on the frequency of light that is transmitted. The wavelength of light defined as the distance between the the two successive troughs of the the light wave.

Therefore, Interaction occurs when light goes into an object as heat energy is Absorbed light.

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1 year ago
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If you had 1.50 g of ZnSO4.7H20, zinc sulfate septahydrate, how many grams of water will there be?
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3 years ago
A researcher measures the equilibrium separation between two flat hydrophilic mica plates in a solution of non-ionic surfactant.
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See explaination and attachment

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3 0
3 years ago
Which statement describes the 3d, 4s, and 4p orbitals of Arsenic (As) based on its electronic configuration and position in the
tekilochka [14]

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The 3d and 4s orbitals are completely filled, and the 4p orbital is partially filled.

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8 0
3 years ago
A gas of 3.4 moles occupies a volume of 0.046 L at 298 K. What is the pressure in kPa?
Phantasy [73]

Answer : The correct option is, 2.1\times 10^5kPa

Explanation :

To calculate the pressure of gas we are using ideal gas equation as:

PV=nRT

where,

P = pressure of gas = ?

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n = number of moles of gas = 3.4

R = gas constant = 8.314 L.kPa/mol.K

T = temperature of gas = 298 K

Now put all the given values in the above formula, we get:

P\times (0.046L)=(3.4mol)\times (8.314L.kPa/mol.K)\times (298K)

P=1.83\times 10^5kPa\approx 2.1\times 10^5kPa

Therefore, the pressure of gas is, 2.1\times 10^5kPa

3 0
3 years ago
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