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Rudik [331]
3 years ago
9

When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place?

Chemistry
1 answer:
DaniilM [7]3 years ago
5 0

Answer:

The Answer Is Chemical Change :)

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Can someone help me pls
Inessa [10]

Answer:

The heat would flow from the hot solid to the cool solid until all temperatures are near equal.

4 0
2 years ago
How much time would it take for 5.2 x 10^5 atoms of fermium-253 (half-life 3 days) to decay to 6.5 x 104 atoms?
Jlenok [28]

Answer:

9 days, or 3 half-lives

Explanation:

5.2x10^5=520000

6.5x10^4=65000

65000/520000=1/8, or 3 half-lives

3x3=9 days

I'm not the greatest at Chem but this seems more like math than Chem :)

4 0
2 years ago
Once you have collected 40 mL of distillate, you should ________. turn off your hot plate lower your lab jack carelessly use you
sweet-ann [11.9K]

Answer:

Once you have collected 40 mL of distillate, you should ________.

turn off the hot plate and carefully lower the lab jack, making sure that no cords or hoses get caught in it.

Explanation:

Distillate is the product obtained from the process of distillation.  Distillation is the separation of components of a liquid mixture based on different boiling points. Distillation can be used to purify alcohol, for desalination, refining of crude oil, and for obtaining liquefied gases.  A lab jack is an essential tool that supports and lifts hotplates, glassware, baths, and other small lab equipment requiring stable surfaces at a specific height.

5 0
2 years ago
Write a balanced chemical equation for the neutralization reaction between phosphoric acid and lithium hydroxide.
Akimi4 [234]
Hope that helps!!!!!!!

5 0
2 years ago
Write the dissociation equation for NH4OH.​
iVinArrow [24]

Explanation:

NH4OH(aq) ---> NH4+(aq) + OH-(aq)

7 0
2 years ago
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