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erica [24]
3 years ago
7

Will is learning about a new kind of plastic used to make models. He learns that infrared light is absorbed by the plastic, X-ra

y light is transmitted through the plastic, and visible light is reflected off the plastic. Will wonders if the plastic will melt if he shines the lights on it. Can light cause the plastic to melt? Why or why not? Does it matter what type of light he shines on the plastic?
Chemistry
2 answers:
tamaranim1 [39]3 years ago
8 0

Answer:

no it dosen't matter

Explanation:

because it absorbed the light so it had to damage it.

I am Lyosha [343]3 years ago
6 0

Answer: Yes, I think light can cause the plastic to melt, as long as the energy from the light is absorbed by the plastic.  

Explanation:

Visible light will not melt the plastic because the energy does not pass through the plastic, it reflects off ensuring that the plastic does not absorb the energy. X-ray light is transmitted through the plastic, unlike the visible light, but the energy still isn't absorbed by it. The infrared light is the only one left, it is absorbed by the plastic allowing it to change and melt the material, unlike the visible and x-ray lights.

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Which list of solutions is arranged in order from highest boiling point to lowest boiling point?
Oxana [17]

In determining the boiling point of solutions, always take note of the number of ions that will dissociate in the solution. It does not depend on the nature of the substance. The greater the number of ions dissociated, the greater is the boiling point of the solution. 

5 0
3 years ago
1.4g of calcium oxide obtained by heating limestone was found to contain 0.4g of oxygen.another sample of 3.5g of calcium oxide
Leya [2.2K]

Answer:

Solution

1.4 gm of CaO⟶n0.4 gm of Oxygen

1.0 gm of O2⟶3.5 gm of Ca

According to the law of definite proportions

n/m=y/x

⇒1.4/0.4=3.5.

⇒3.5=3.5

Explanation:

6 0
3 years ago
What is the pressure of a mixture of 0.200 g of H2, 1.00 g of N2 , and 0.820 g of Ar in a container with a volume of 2.00 L at 2
alexdok [17]

Answer:

P(mixture) = 1.92 atm

Explanation:

Given data:

Mass of H₂ = 0.200 g

Mass of N₂ = 1.00 g

Mass of Ar = 0.820 g

Volume = 2 L

Temperature = 20°C

Pressure of mixture = ?

Solution:

Pressure of hydrogen:

Number of moles of hydrogen = mass / molar mass

Number of moles of hydrogen = 0.200 g / 2 g/mol

Number of moles of hydrogen = 0.1 mol

P = nRT / V

P = 0.1 mol× 0.0821 atm. L.mol⁻¹ .k⁻¹ × 293 K / 2L

p = 2.41 atm. L /2 L

P = 1.2 atm

Pressure of nitrogen:

Number of moles of nitrogen = mass / molar mass

Number of moles of nitrogen = 1 g / 28 g/mol

Number of moles of nitrogen = 0.04 mol

P = nRT / V

P = 0.04 mol× 0.0821 atm. L.mol⁻¹ .k⁻¹ × 293 K / 2L

p = 0.96 atm. L /2 L

P = 0.48 atm

Pressure of argon:

Number of moles of argon = mass / molar mass

Number of moles of argon = 0.820 g / 40 g/mol

Number of moles of argon = 0.02 mol

P = nRT / V

P = 0.02 mol× 0.0821 atm. L.mol⁻¹ .k⁻¹ × 293 K / 2L

p = 0.48 atm. L /2 L

P = 0.24 atm

Total pressure of mixture:

P(mixture)  = pressure of hydrogen + pressure of nitrogen + pressure of argon

P(mixture)  = 1.2 atm + 0.48 atm + 0.24 atm

P(mixture) = 1.92 atm

5 0
3 years ago
Please select the word from the list that best fits the definition
sammy [17]
Pretty sure it’s ,B. Microscope!
8 0
3 years ago
What is the name of Cr3P
almond37 [142]

Answer:

Chromium (I) phosphide.

Explanation:

Hope this help:D

8 0
3 years ago
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