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zavuch27 [327]
3 years ago
6

From the periodic table, the number of valence electrons for most of the main group elements may be determined directly from the

From the periodic table, the number of valence electrons for most of the main group elements may be determined directly from the atomic number. group number. period number. nucleon number.
Chemistry
1 answer:
11111nata11111 [884]3 years ago
4 0

What is the question?


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3 years ago
How many grams of oxygen gas will react completely with a block of calcium metal that is 3.0 cm by 3.5 cm by 4.2 cm, if the dens
irina1246 [14]

First find the mass

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3 0
3 years ago
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Consider a solution made from a nonvolatile solute and a volatile solvent. Which statement is true?
34kurt

Answer:

b) The boiling point of the solution is always greater than the boiling point of the pure solvent.

Explanation:

Hello,

In this case, when we add a nonvolatile solute to a volatile solvent which has a relatively low boiling point, we can evidence the increase of the boiling point of the resulting solution as more energy must be supplied to take the molecules from liquid to gas. This fact matches with the boiling point elevation colligative property due to the solute's addition, which states that the boiling point of the solution is always greater than the boiling point of the pure solvent, therefore, answer is b).

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4 0
3 years ago
Draw diagrams to show the arrangement of particles in a<br> Salid a liquid, and a gas
padilas [110]

Answer:

solid(particles are rightly packed)

liquid(particles are losely packed)

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4 0
3 years ago
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