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IceJOKER [234]
3 years ago
10

A sample of gas occupying 350 mL at 25 C is cooled to -25 C. What volume will it occupy if the pressure is held constant?

Chemistry
1 answer:
leonid [27]3 years ago
7 0

Answer:

I hac no ideasghjjbhnn

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What do the rows of the periodic table indicate?
Tanya [424]

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The rows on the periodic table are called periods. All the elements in a period have valence electrons in the same shell. The number of valence electrons increases from left to right in the period. When the shell is full, a new row is started and the process repeats.

Explanation:

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3 years ago
Reaction btwn zinc and hydrochloric acid<br>​
KIM [24]

Answer:

Zn + 2HCl = ZnCl2 + H2

Explanation:

as Zinc is more active than Hydrogen

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8 0
3 years ago
A. 207 kJ<br> B. 4730 kJ<br> C. 9460 kJ<br> D. 414 kJ
MrMuchimi

Answer:

Q = 9460 Kj

Explanation:

Given data:

Mass of copper = 2kg

Latent heat of vaporization = 4730 Kj/Kg

Energy required to vaporize 2kg copper = ?

Solution:

Equation

Q= mLvap

It is given that heat required to vaporize the one kilogram copper is 4730 Kj thus, for 2 kg

by putting values,

Q= 2kg ×  4730 Kj/Kg

Q = 9460 Kj

6 0
3 years ago
Borildls03
NISA [10]

Answer:

Mg2+ and Ca2+

Explanation:

Hard water are water that happen to contain salts of calcium and magnesium ions. They can occur as chlorides, sulphates, bicarbonates etc. Hard water wastes soap as it requires an above normal amount to form lathers.

The metallic ions are;

Mg2+ and Ca2+

6 0
3 years ago
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