The chemical purpose of heating the MnSO4⋅H2O is to eliminate water with the formation of new compounds.
<h3>Dehydration reactions</h3>
Dehydration reaction is a type of chemical reaction that involves the removal of water which would eventually lead to the formation of a new compound.
The molecule of MnSO4⋅H2O contains a molecule of water(H2O). After heating of the molecule, water is lost giving rise to the dry compound MnSO4.
Other examples of dehydration reactions are:
- Reactions that produce acid anhydrides.
- Reactions that involve the production of polymers.
- Reaction of sucrose with concentrated sulfuric acid
Therefore, the chemical purpose of heating the MnSO4⋅H2O is to eliminate water with the formation of new compounds.
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Answer:
5.25 grams of potassium sulfate will get crystallize out.
Explanation:
Solubility of potassium sulfate at 40 °C = 15 g/100 g
This means that at 40 °C 15 g of potassium sulfate will get completely dissolved in 100 of water.
39.0 g of potassium sulfate to 225 g water, carefully heating the solution.
Amount of potassium sulphate will get dissolve in 225 g of water at 40 °C will be:
× 225 = 33.75g
Amount of potassium sulfate precipitated out by the solution:
= 39.0 g-33.75 g = 5.25 g
At 40 °C 5.25 g of potassium sulfate will get precipitate out from the solution which means that solution is saturated.
Saturated solution are solution in which solute is dissolved in maximum amount. Further addition of solute results in precipitation of solute form the solution.
5.25 grams of potassium sulfate will get crystallize out.
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In scientific notation, the measurement of each figure to three significant measurements are as follows:
- 87.073 meters = 8.71 × 10⁻¹ meters
- 4.3621 × 10⁸ meters = 4.36 × 10⁸ meters
- 0.01552 meter = 1.55 × 10² meters
- 9009 meters = 9.01 × 10² meters
- 1.7777 x 10-3 m = 1.78 × 10⁻³ meters
- 629.55 meters = 6.30 × 10² meters
A significant figure is the digits in a number that is dependable and absolutely essential to express the quantity of a figure in positional notation. They are utilized to represent the appropriate degree of precision.
A scientific notation is used to express a large number in an easy decimal way multiplied by its power of 10.
From the given information, in scientific notation, and to three significant figures, we have:
- 87.073 meters = 8.71 × 10⁻¹ meters
- 4.3621 × 10⁸ meters = 4.36 × 10⁸ meters
- 0.01552 meter = 1.55 × 10² meters
- 9009 meters = 9.01 × 10² meters
- 1.7777 x 10-3 m = 1.78 × 10⁻³ meters
- 629.55 meters = 6.30 × 10² meters
Therefore, from the above concept, we can conclude that the scientific notation of each figure in three significant figures is shown in bold format.
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Answer:
hello
Explanation:
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