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What is the limiting reactant reagent and what is excess reagent in recrystallization?
The Limiting Reactant is the smaller number once you compare the two reactants with one product. The product that you are comparing them both with must be the same. The Excess Reactant is the larger number, or the amount left over in the chemical reaction.
Why does the oxidase reagent need to be fresh?
The oxidase reagent needs to be fresh because it contains the enzyme cytochrome c oxidase, which can degrade over time, leading to false-negative results if it is not active. Using fresh reagent ensures the accuracy of the test results.
What chemical compound is left over when joining two amino acids together?
When two amino acids are joined together, a water molecule is released, and a peptide bond is formed. This creates a dipeptide, which is the chemical compound left over after the amino acids have been joined.
What is the use of dripping apparatus?
A dripping apparatus is commonly used to add small and controlled amounts of a liquid, such as a reagent, into a reaction mixture slowly over time. This can be important for precise and gradual additions in chemical reactions, titrations, or other experiments where the rate of addition is critical.
How can you recognize the product in a chemical equation?
The product in a chemical equation is located on the right side of the arrow. It is what is formed as a result of the reaction between the reactants on the left side of the arrow. Additionally, products are typically written in a different format or style in the chemical equation compared to the reactants.
Why is it necessary to determine if a reactant is is a limiting reagent in a reaction?
Identifying the limiting reagent is important because it determines the maximum amount of product that can be formed in a reaction. If the reactant ratio is not optimal, some reactants may be left over, leading to inefficiency and wastage. Therefore, understanding the limiting reagent helps to optimize reactions and conserve resources.
Identify the number of moles of excess reagent left over when 8.368 moles of iron III oxide are reacted with 9.825 moles of aluminum in the thermite reaction.?
To find the excess reagent, first write and balance the chemical equation for the thermite reaction: 2Al + Fe2O3 -> 2Fe + Al2O3 Next, determine the limiting reagent using the mole ratios (in this case, Fe2O3 is limiting). Then, calculate the moles of excess reagent left over (Al) using the mole ratio from the balanced equation. Subtract the moles of Al consumed from the initial moles of Al to find the excess.
What is the limiting reactant reagent and what is excess reagent in recrystallization?
The Limiting Reactant is the smaller number once you compare the two reactants with one product. The product that you are comparing them both with must be the same. The Excess Reactant is the larger number, or the amount left over in the chemical reaction.
Why does the oxidase reagent need to be fresh?
The oxidase reagent needs to be fresh because it contains the enzyme cytochrome c oxidase, which can degrade over time, leading to false-negative results if it is not active. Using fresh reagent ensures the accuracy of the test results.
What chemical compound is left over when joining two amino acids together?
When two amino acids are joined together, a water molecule is released, and a peptide bond is formed. This creates a dipeptide, which is the chemical compound left over after the amino acids have been joined.
What is the difference between reagent and catalyst?
A reagent is a substance consumed during a chemical reaction to produce a specific product, while a catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. In other words, reagents participate in the reaction, while catalysts facilitate the reaction without being altered themselves.
Why does an abusive partner seem mad yet act like he is in complete agreement when you tell him logically that it is over because it's too painful to be with him?
Most people, abusive or not, get upset when their significant other tells them it's over. It's a natural reacion. It could also be that he too agree's it's over and too painful to be with you.
What is the use of dripping apparatus?
A dripping apparatus is commonly used to add small and controlled amounts of a liquid, such as a reagent, into a reaction mixture slowly over time. This can be important for precise and gradual additions in chemical reactions, titrations, or other experiments where the rate of addition is critical.
How can you recognize the product in a chemical equation?
The product in a chemical equation is located on the right side of the arrow. It is what is formed as a result of the reaction between the reactants on the left side of the arrow. Additionally, products are typically written in a different format or style in the chemical equation compared to the reactants.
Why oxidase reagent need to be fresh?
Oxidase reagent needs to be fresh because it is sensitive to degradation and can lose its reactivity over time. When the reagent is old or improperly stored, it may not accurately detect the presence of cytochrome oxidase in microbial cultures, leading to false-negative results. Fresh reagents ensure reliable and consistent performance in biochemical tests.
Identify the number of moles of excess reagent left over when 4.821 moles of ironIII oxide are reacted with 5.591 moles of aluminum in the thermite reaction?
The balanced equation for the thermite reaction is: 2Al + Fe2O3 -> Al2O3 + 2Fe. This means that 2 moles of aluminum react with 1 mole of ironIII oxide. Therefore, if 5.591 moles of aluminum are used, 2.7955 moles of ironIII oxide will react. Since 4.821 moles of ironIII oxide are provided, the excess reagent is aluminum. The amount of excess aluminum left over is 5.591 moles - 2.7955 moles = 2.7955 moles.
How do you use left over in a sentence?
I have some left over bread.
