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slavikrds [6]
3 years ago
7

Which of the following chemical reactions will produce a precipitate? *

Chemistry
1 answer:
Zolol [24]3 years ago
8 0

Answer:

A

Explanation:

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jeka57 [31]

Answer:

8 oxygen. 9 flourine. 10. Neon. 5 Boron

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3 years ago
Idoine would have chemical properties most like ?
svetlana [45]
Iodine would have chemical properties most like Fluorine, Chlorine and other elements in group 7
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Need help with the balancing one
DochEvi [55]
The third option, 2,2,1,2
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2 years ago
A sample of methane at a pressure of 1.00 atm and a temperature of 93.1 K is heated at constant pressure to a temperature of 158
Zinaida [17]

Answer:

b. The final state of the substance is a gas.

d. The sample is initially a liquid. One or more phase changes will occur.

Explanation:

Methane has the following properties:

  • Normal melting point: 90.7 K
  • Normal boiling point: 111.65 K

*"Normal" refers to normal pressure (1 atm).

According to this, we can affirm:

  • Below 90.7 K, methane is solid.
  • Between 90.7 K and 111.65 K, methane is liquid.
  • Above 111.65 K, methane is gas.

<em>A sample of methane at a pressure of 1.00 atm and a temperature of 93.1 K is heated at constant pressure to a temperature of 158 K. Which of the following are true? Choose all that apply.</em>

<em>a. The liquid initially present will solidify.</em>  FALSE. The liquid will vaporize.

<em>b. The final state of the substance is a gas.</em>  TRUE.

<em>c. The sample is initially a solid.</em>  FALSE. The sample is initially a liquid.

<em>d. The sample is initially a liquid. One or more phase changes will occur. </em>TRUE.

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2 years ago
Eukaryotic cells contain certain structures that perform specialized functions for the cell. What are these structures called? A
DochEvi [55]
<span>Eukaryotic cells contain organelles that perform specialised functions.</span>
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3 years ago
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