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nordsb [41]
3 years ago
15

What is the solubility of salt in water at room temperature

Chemistry
1 answer:
rewona [7]3 years ago
5 0
<h3><u>Answer;</u></h3>

357 mg/mL

<h3><u>Explanation;</u></h3>
  • Solubility is defined to be the maximum amount of solute that will dissolve in a given amount of solvent at a specific temperature. The solubility of a salt is one of many physical properties that depend on temperature.
  • At room temperature 25 °C, the solubility of salt or Sodium Chloride is 357 mg/mL.
  • For many solutes, increasing the temperature increases the solubility of the solute. The solubility of sodium chloride or table salt is only slightly affected by temperature increase.
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For which compound does 0.256 mole weigh 12.8 g?
mylen [45]
Number of moles = \frac{mass (g)}{Molar mass}
so to calculate molar mass (Molecular weight of compound):
Molecular weight = \frac{mass (g)}{number of moles}
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Now we calculate molecular weight of each compound in choices:
a) C₂H₄O = 44
b) CO₂ = 44
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6 0
3 years ago
What is the empirical formula of a compound containing carbon, hydrogen, and oxygen in the ratio 14:42:84? C14H42O84
kati45 [8]
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CH₃O₆
6 0
3 years ago
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lisabon 2012 [21]
Na is cation so it loses electron to be positive and become stable losing one valence shells one electron so it's oxidation number is +1 ie A is correct
7 0
3 years ago
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andrezito [222]
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5 0
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Using VSEPR theory which of the following would be the correct shape for nitrogen trifluoride?
RUDIKE [14]

Answer:

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Explanation:

In NF3, the nitrogen atom is sp3 hybridized. Now we must remember that according to the VSEPR theory, the number of electron pairs in the valence shell of the central atom in a molecule determines its shape.

Here, the nitrogen atom is the central atom and its outermost shell is surrounded by four electron pairs - one lone pair and three bond pairs. This means that it has a tetrahedral electron pair geometry.

However, due to the lone pair, the three fluorine atoms are arranged in a  trigonal pyramidal geometry. Hence the correct shape of the molecule is trigonal pyramidal.

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3 years ago
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