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Katyanochek1 [597]
3 years ago
9

How do you answer this? does anyone know the equation you use?​

Chemistry
1 answer:
bonufazy [111]3 years ago
6 0

number 18 is 40.3kj/mol

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When sodium chloride, NaCl , dissolves in water, the solution contains ___________________ in addition to the water solvent. The
g100num [7]

Answer:

sodium ions and chloride ions

chloride ion

sodium ion

Explanation:

Ionic substances are composed of ions. When you dissolve an Ionic substance in water, the ions that compose the substance together with water molecules are present in solution.

Hence, when sodium chloride is dissolved in water, sodium ions and chloride ions are released in solution.

Water has a dipole moment. Hence, the chloride ions are attracted to hydrogen (the positive end of the dipole) while sodium ions are attracted to oxygen (the negative end of the dipole).

This is how the solid is dissolved in water.

4 0
3 years ago
The picture (below) shows the formula for ___________.
Stella [2.4K]

Answer:

Small change

Explanation:

6 0
3 years ago
What is the net ionic equation of the reaction of mgcl2 with naoh?
AveGali [126]

Answer:

The net ionic equation will be MgCl₂ + 2  NaOH → Mg(OH)₂ + 2 NaCl

Explanation:

Ionization of MgCl₂ is as follows

MgCl₂  → Mg²⁺ + 2 Cl⁻

Ionization of NaOH is as follows

NaOH → Na⁺ + OH⁻

It  is a one type of substitution reaction where OH⁻ combined with  Mg²⁺ to give magnesium hydroxide .

 On the other hand Cl⁻ combined with Na⁺ to give sodium chloride as product.

Using proper stoichiometry to balanced the number of atoms in both side .

7 0
3 years ago
The first periodic table of elements was created in 1955. True or false
DaniilM [7]
I believe the answer is false
5 0
3 years ago
1. Which out of the following elements has the lowest electronegativity: Lithium, Beryllium, Magnesium, Sodium
lidiya [134]
  1. The element Sodium (Na) has a low electronegativity of the following elements.
  2. The element Beryllium (Be) has the least metallic character.
  3. The element Sodium (Na) has the largest atom.

<u>Explanation:</u>

  • Sodium (Na) which is a delicate, shimmering white, profoundly responsive soluble base metal loses an electron to a chlorine iota since it has seven electrons in its valence shell.
  • It needs one more electron to turn into a steady molecule. It has the most reduced electronegativity of the given components.
  • Beryllium (Be) is a light, silver-gray, relatively soft metal that is strong but brittle has the least metallic character of the given elements.
  • Since from left to right in a period, Metallic character decreases while nonmetallic character increases from top to bottom.
  • Sodium(Na) is the largest atom among the given elements since Atomic size decreases across a period from left to right and increases from top to bottom.
6 0
3 years ago
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