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Anni [7]
3 years ago
14

How are the periods, or horizontal rows, on a periodic table ordered from left to right? (2 points)

Chemistry
2 answers:
Nesterboy [21]3 years ago
8 0
The answer is the second one .......................
Anarel [89]3 years ago
6 0
#2
They are ordered by increasing number of protons (aka atomic number)
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Describe how the meniscus is used to read volume measurements on a graduated cylinder
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Answer:Tthe liquid in a graduated cylinder curves up at the edge where the liquid meets the wall of the cylinder. This curve in the liquid is called the meniscus and is used to determiine the volume of liquid in a graduated cylinder by observing the measurement tick closest to the bottom of the meniscus.

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4 0
2 years ago
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Draw one representation that shows the intermolecular interactions between NH_3 and water and another that shows the intermolecu
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Answer:

NH3 has greater water solubility due to intermoleculate interactions

Explanation:

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If we represent the structures of NH3 and SbH3 we can see that they are similar to the naked eye, this is because N and Sb belong to the same group of the periodic table (group 15).

However, the electronegativity of N is greater than that of Sb. The NH3 molecule is polar and can form an intermolecular interaction called hydrogen bridge with water.

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The zone with positive charge density of the water molecule (hydrogens) is oriented towards the zone with positive charge density of SBH3 (the pair of electrons not shared)

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5 0
3 years ago
I need help on chemistry work
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Answer:

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2 years ago
Sodium phosphate dodecahydrate, na3po4(12h2o), is crystalline salt that is water soluble. describe what is present in an aqueous
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Sodium cations and phosphate anions .

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7 0
3 years ago
The chart below shows examples of solids, liquids, gases, and plasma.
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The word that is in an incorrect place in the chart is HAIL.
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3 years ago
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