CHEMISTRY HIGH SCHOOL

In an aqueous solution, a chloride ion is attracted to which end of the water molecule?

Answers

Answer 1
Answer:

Answer : In an aqueous solution, a chloride ion is attracted to the hydrogen end of the water molecule.

Explanation :

The meaning of aqueous solution is the solution in which the solvent is water. In water molecule H_2O, oxygen atom is more electronegative than the hydrogen atom. That means, the hydrogen in the water molecule has partial positive charge and oxygen has partial negative charge.

As the chloride ion have the (-1) negative charge. So, it will be attracted towards the positive charge that is hydrogen end of the water molecule because opposite charges attract to each other.

Hence, in an aqueous solution, a chloride ion is attracted to the hydrogen end of the water molecule.
Answer 2
Answer: The end with the hydrogen atoms because the chloride ion is negatively charged while the hydrogen is positive. Hope this helps

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which sample, when dissolved in 1.0 liter of water, produces a solution with the highest boiling point?

Answers

After a thorough research, the same question exists with the following choices.

(1) 0.1 mole KI
(2) 0.2 mole KI
(3) 0.1 mole MgCl2
(4) 0.2 mole MgCl2

The correct answer is (4) 0.2 mole MgCl2. IN Vant Hoff factor, it is greater for MgCl2. There are more ions.

My sister is a peach" is a metaphor.


TrueFalse

Answers

yes that is a metaphor 

Answer:

True it is a metaphor

Explanation:

What triggers the small earthquakes that occur around a volcano before an eruption

Answers

Before the eruption,the fluid pressure from the rising magma (dense liquid) cracks the rocsk, the tectonic plates under the Earth's crust are moved and as a result earthquakes are caused. Manu small earthquakes in the area near a volcano hint what may happen.

How does the law of conservation of matter apply to chemical equations

Answers

Since the law of conservation of matter says that no matter can be created or destroyed, chemical equations must have the same amount of matter after the reaction as there was before, making them balanced.

A solution is made by dissolving 54.0 g of silver nitrate in enough water to make 350.0 ml. A 10.00 ml portion of this solution is then diluted to a final volume of 250.0 ml. What is the total concentration of ions present in the final solution?

Answers

Answer:

  • 0.0726 M

Explanation:

Molar concentration of the final solution is the number of moles of solute (n) divided by the final volume in liters (V). This is the mathematical formula for molarity:

M = n solute / V solution in liters = n silver nitrate / V solution in liters

1) Calculate the number of moles of silver nitrate in the initial solution, dissolving 54.0 g of silver nitrate to make 350.0 ml of solution:

  • Solute = silver nitrate = AgNO₃

  • Molar mass of AgNO₃ = 169.87 g/mol

  • n = mass in grams / molar mass = 54.0 g / 169.87 g/mol = 0.318 mol

2) Calculate the molarity of the initial solution:

  • M = n / V = 0.318 mol / 0.3500 liter = 0.9086 M

3) Calculate the number of moles of silver nitrate in a 10.0 ml portion of that solution:

  • M = n / V ⇒n = M × V

 

         n = 0.9086 M × 10.0 ml / (1,000 ml / liter) = 0.009086 moles silver nitrate

4) Molar concentration (molarity) of the final 250.0 ml solution:

  • M = n / V = 0.009086 mol / 0.2500 liter = 0.0363 M

5) Concentration of ions present in the final solution:

You must assume 100% ionization:

  • AgNO₃ → Ag⁺ + NO₃⁻

Then, since each mole of AgNO₃ yields two moles of ions, the total concentration of ions present is the double: 2 × 0.0363 M = 0.0726 M

Which element will chemically combine with fluorine to form a salt?a. carbon
b. lithium
c. neon
d. oxygen

Answers

The answer is C
Hope this helps
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