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weqwewe [10]
3 years ago
15

Use the table to identify the phase and phase changes of the elements under the given conditions. Write the name of the substanc

e, phase, or phase change.
When the temperature in a room increases from
25°C to 33°C,
changes from a solid
to a liquid.
In a lab, methane and nitrogen are cooled from
-170°C to -200°C. The methane freezes and the
nitrogen
.
When gold is heated to 2,856°C it changes from a liquid to a
.
Chemistry
2 answers:
a_sh-v [17]3 years ago
7 0

Answer: gallium, condenses, gas

Explanation: took assignment on edge

Lana71 [14]3 years ago
3 0

Answer: gallium, condenses, gas

Explanation: took assignment on edge

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A wooden block has a volume of 25.3 cm3. Its mass is 17.0g. What is the density of this block?
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In an experiment, Ann mixes concentrated sulfuric acid with water in a reaction test tube. The walls of the test tube turn hot.W
vladimir2022 [97]
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8 0
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Read 2 more answers
The steps required to prepare 200.0 mL of an aqueous solution of iron (III) chloride, at a concentration of 1.25x10^-2 M. Please
Yanka [14]

Answer:

In order to prepare 200.0 mL of an aqueous solution of iron (III) chloride, at a concentration of 1.25 x 10⁻² M, you need to weight 0.4055 g of FeCl₃ and add to 200.0 mL of water.

Explanation:

Concentration: 1.25 x 10⁻² M

1,25 x 10⁻² mol FeCl₃ ___ 1000 mL

              x                   ___ 200.0 mL

         x = 2.5 x 10⁻³ mol FeCl₃

Mass of FeCl₃:

1 mol FeCl₃ _____________ 162.2 g

2.5 x 10⁻³ mol FeCl₃ _______    y

                  y = 0.4055 g FeCl₃

8 0
3 years ago
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