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Reacting mass calculations involve determining the amounts of reactants needed to produce a certain amount of product in a chemical reaction. Start by writing a balanced chemical equation and converting the given mass of one reactant to moles. Use the mole ratio from the balanced equation to calculate the moles of the other reactant needed. Finally, convert the moles of the second reactant to mass if required.
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Why is equivalent mass determined and not molar mass from an acid base titration?
Equivalent mass is determined because acid-base reactions involve the transfer of protons, not just the complete molecules of the acid and base. Equivalent mass takes into account this stoichiometry and allows for accurate calculations of the amount of acid or base reacting in the titration. Molar mass, on the other hand, only considers the total mass of the entire molecule, which may not reflect the true amount of substance reacting in the titration.
Why law of conservation of mass has to be obeyed during stoichiometric calculations?
The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction, only rearranged. This principle is crucial in stoichiometric calculations because it ensures that the total mass of reactants is equal to the total mass of products, allowing for accurate determination of quantities involved in the reaction. By obeying this law, one can track the transfer of mass throughout a reaction and ensure mass balance in equations.
An element's atomic mass does not include the mass of its?
An element's atomic mass does not include the mass of its electrons. Electrons have such a small mass compared to protons and neutrons that they are not typically included in calculations of atomic mass.
What is the best way to express molar mass?
The best way to express molar mass is in grams per mole (g/mol). It represents the mass of one mole of a substance and is commonly used in chemistry calculations and stoichiometry.
What are the subatomic particles with no mass called?
Subatomic particles with no mass are called neutrinos. Neutrinos are elementary particles that have extremely small, non-zero masses, but they are considered nearly massless in many calculations due to their very small mass values.
Why is equivalent mass determined and not molar mass from an acid base titration?
Equivalent mass is determined because acid-base reactions involve the transfer of protons, not just the complete molecules of the acid and base. Equivalent mass takes into account this stoichiometry and allows for accurate calculations of the amount of acid or base reacting in the titration. Molar mass, on the other hand, only considers the total mass of the entire molecule, which may not reflect the true amount of substance reacting in the titration.
What units are used to measure mass in gravity calculations?
In gravity calculations, mass is typically measured in units of kilograms (kg).
How are mass calculations used?
Mass percentage calculations determine the percentage of an element based on mass in a compound. This can then be used to determine the percentage in a compound of each individual element.
What is the significance of the molar mass symbol in chemistry calculations?
The molar mass symbol in chemistry calculations is significant because it represents the mass of one mole of a substance in grams. It is used to convert between the mass of a substance and the number of moles present, allowing for accurate measurements and calculations in chemical reactions and stoichiometry.
How are percentage mass calculations used?
mass of the solute/(mass of solution + mass of the solute) x 100%ie: if 67.1g of CaCl2 is added to 275g of water, calculate the mass percent of CaCl2 in the solution.67.1/342.1=.1961.1961 x 100% = 19.6% of CaCl2
What is the maximum mass of aluminum chloride that can be formed when reacting 24.0 of aluminum with 29.0 of chlorine?
36.4 Grams
What 2 particles have similar masses?
Protons and neutrons have near identical mass. One will not have to account for the difference in mass in most calculations.
What is the relationship between the dimension of molar mass and its significance in chemical calculations?
The molar mass of a substance is the mass of one mole of that substance. It is important in chemical calculations because it allows us to convert between the mass of a substance and the number of moles present. This relationship is crucial in determining the amount of reactants needed or products formed in a chemical reaction.
What are the dimensions of amount of substance and how are they used in chemical calculations?
The dimensions of amount of substance are measured in moles. Moles are used in chemical calculations to determine the quantity of a substance in a reaction, to convert between mass and number of particles, and to calculate the molar mass of a compound.
Why law of conservation of mass has to be obeyed during stoichiometric calculations?
The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction, only rearranged. This principle is crucial in stoichiometric calculations because it ensures that the total mass of reactants is equal to the total mass of products, allowing for accurate determination of quantities involved in the reaction. By obeying this law, one can track the transfer of mass throughout a reaction and ensure mass balance in equations.
Why does the law of conservation of energy have to include changes in mass?
It doesn't really have to - there is no such thing as "mass-to-energy conversion", rather, a change in energy will be accompanied by a change in mass. But the change in mass sometimes simplifies calculations.
Why is mass used and not weight for density?
Mass is used for density calculations because weight can vary depending on the force of gravity acting on an object. Density is a measure of how much mass is contained in a given volume, and it should not be affected by changes in gravity. Mass is an intrinsic property of an object and remains constant regardless of location, making it a more reliable measure for density calculations.
