Answer:
1. A hydrated salt is a salt that has a crystalline molecular structure and is loosely attached to water molecules, hence “hydrated” in the name. On the contrary, an anhydrous salt with no water for hydration. When breaking up the word “anhydrous” we see that “an” means it is without and the “hydrous” tells us it is without water.
2. It is important to heat the baking dish or ramekin to achieve a constant mass with two consecutive masses that differ no more than 0.1g.
3. It is necessary to achieve constant mass to accurately measure the salts and hydrates that are used in the lab. You will know you have obtained a constant mass when two consecutive masses differ by no more than 0.1 g.
4. The ramekin should be cooled before taking a mass reading because the heat could have an effect of the mass of a specific substance.
5a. The increased humidity could potentially affect the hydrated salt and the hydrate used in the lab, which would cause inconsistencies in the data table.
5b. Without the heating of the ramekin in the preparation for the lab, a constant mass wouldn’t be achieved and would affect the measurement of the substance’s masses.
5c. It could affect the accuracy of the measurement and the reliability that the measurement is true to the fullest extent.
Explanation: PLEASE PUT INTO YOUR OWN WORDS!
Answer: The percent of yield is 50.03%.
Explanation:
First, we need to balance the equation:
⇒
We need to remember that the chemical equations are written in moles, so we have to convert the amounts in grams to moles, using the molecular weight of every compound: Al2O3 (101.96 g/mol), Al (29.98 g/mol) and O2 (31.99 g/mol).
In consequence, the amounts in moles of every compound will be:
Now, we have to find out which is the limit reagent or in other words, which of the reagents will be consumed first, taking into account the stoichiometric ratio of the balanced equation:
As you can see, the maximum amount (theoretically) of Al2O3 that can be produced is 0.1665 mol.
Finally, we have to use the yield formula to calculate the percent yield of the reaction:
Therefore, the percent of yield is 50.03%.
The correct answer is organelles
The answer is b it will always be equal