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Rainbow [258]
3 years ago
7

Solve the science problem No spamming

Chemistry
1 answer:
N76 [4]3 years ago
8 0

Answer:

the fastest would be gas, liquid would be in the middle and solid would be the slowest

Explanation:

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This planet has water in liquid, gas, and solid forms.
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Which group (give the number) is characterized by 5 valence electrons in the configuration<br> s²p3?
Ivahew [28]
<h3>Answer:</h3>

Group 5A

<h3>Explanation:</h3>
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5 0
3 years ago
500 mL solution of calcium chloride with a concentration of 0.75 mol/L. The mass of solute needed to make this solution is ___ _
BabaBlast [244]

Answer:

41.63g

Explanation:

Given parameters:

Volume of CaCl₂  = 500mL  = 0.5L

Concentration  = 0.75mol/L

Unknown:

Mass of the solute needed = ?

Solution:

The mass of the solute can be derived using the expression below;

     Mass  = number of moles x molar mass

But,

   Number of moles  = Concentration x Volume

So;

     Mass  = Concentration x Volume x molar mas

Molar mass of CaCl₂  = 40 + 2(35.5) = 111g/mol

     Mass  = 0.75 x 0.5 x 111 = 41.63g

5 0
2 years ago
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