Answer:
Magnetic separation
Sawdust is a non-magnetic material whereas iron shavings are magnetic. When a magnet is brought near a mixture of iron shavings and sawdust, the iron shavings will be attracted to the magnet while the sawdust will not. Thus, the iron shavings will be separated from the sawdust.
Explanation:
Separation techniques makes use of the differences in the properties of components of mixtures to separate theses components, one from another.
In a moxturemof iron shavings and sawdust, a suitable separation technique would be the use of magnetic separation.
The use of this separation technique is abasednonnthe principle that when a magnetnis brought near to a mixture containing magnetic and non-magnetic materials, the magnetic materials will be separated from the non-magnetic materials due to their attraction to the magnet. Sawdust is a non-magnetic material whereas iron shavings are magnetic. When a magnet is brought near a mixture of iron shavings and sawdust, the iron shavings will be attracted to the magnet while the sawdust will not. Thus, the iron shavings will be separated from the sawdust.
In this item, it is assume that we are to express the dissociation of the formula unit given to be FeCl₂ into its ionic components.
As seen in the chemical formula, the unit is composed of iron (Fe) and chlorine (Cl). The dissociation is written as follows;
FeCl₂ --> Fe²⁺ + Cl⁻
This equation is balanced by multiplying the appropriate component with a number that would equate the number of atoms in both sides of the equation.
<em> FeCl₂ --> Fe²⁺ + 2Cl⁻</em>
Molarity is the strength of the solution or the ratio of the moles and the volume of the solution. The molarity of the solution is 0.1516 mol per Liter.
<h3>What is molarity?</h3>
Molarity is the molar concentration of the solution that tells about the amount of the solute or the substance dissolved in the given amount of the solution.
Given,
- Mass of potassium chloride = 8.45 g
- Molar mass of potassium chloride = 74. 55 g/mol
- Volume of the solution = 0.750 L
Moles can be calculated by:
Calculate molarity by:
Substituting values in the equation:
Therefore, the molarity of the solution is 0.1516 mol per Liter.
Learn more about molarity here:
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Answer: Areas surrounded by water would have less of a change in temperature
throughout the year.
Explanation: Water has a higher specific heat index so it's temperature will be slow to rise. Water also holds heat longer than most material hence areas sorrounsing water will have less temperature change throughout the year.
Answer:
AM
Explanation:
to go from moles to grams you multiply by the Atomic Mass or Molar Mass (Atomic Mass for an element and Molar Mass for a compound).
The formula is:
Mass = moles * MM
