What mass of calcium carbonate is produced when 250 mL of 6.0 M sodium carbonate is added to 750 mL of 1.0 M calcium fluoride
Answers
Given:
Volume of Na2CO3 = 250 ml = 0.250 L
Molarity of Na2CO3 = 6.0 M
Volume of CaF2 = 750 ml = 0.750 L
Molarity of CaF2 = 1.0 M
To determine:
The mass of CaCO3 produced
Explanation:
Na2CO3 + CaF2 → CaCO3 + 2NaF
Based on the reaction stoichiometry:
1 mole of Na2CO3 reacts with 1 moles of Caf2 to produce 1 mole of caco3
Moles of Na2CO3 present = V * M = 0.250 L * 6.0 moles/L = 1.5 moles
Moles of CaF2 present = V* M = 0.750 * 1 = 0.750 moles
CaF2 is the limiting reagent
Thus, # moles of CaCO3 produced = 0.750 moles
Molar mass of CaCO3 = 100 g/mol
Mass of CaCO3 produced = 0.750 moles * 100 g/mol = 75 g
Ans: Mass of CaCO3 produced = 75 g
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The quantity of materials in a sample determines whether a property is referred to as an extensiveproperty. The type of matter in a sample, not the quantity, determines an intense attribute of matter.
What are physical properties?
Physical properties are defined as the properties of matter that may be seen and measured without affecting the sample's chemical composition. Physical characteristics of substances and systems are frequently referred to as extensive and intensive characteristics.
Mass, weight, and volume are examples of extensive qualities that change depending on the amount of the substance. Contrarily, intensive qualities, such as color, melting point, boiling point, electrical conductivity, and physical state at a specific temperature, are independent of the amount of the substance present.
Thus, the quantity of materials in a sample determines whether a property is referred to as an extensiveproperty. The type of matter in a sample, not the quantity, determines an intense attribute of matter.
To learn more about physical properties, refer to the link below:
#SPJ5
Answer:
extensive properties depend on the amount of matter being used. intensive properties do not depend on the present substantive.
Explanation:
0.06 L of KOH with unknown concentration is placed in a flask with bromthymol blue indicator. A solution of 0.20 M
H2504 is dripped into the KOH solution. After exactly 0.017 L of H2SO4 is added, the Indicator changes from blue to
yellow. What is the concentration of the KOH? You must show all of your work to earn credit. (4 points)
H2SO4 + 2KOH → K2SO4 + 2H20
Answers
Answer:
Explanation:
1. Reaction
2. Mole ratio
3. Sulfuric acid
4. Potassium hydroxide
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√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√√v√√√√√√
She mixes two solutions and measures their pH before and after.
She asks her lab partner which base he thinks is hardest to study. <-- my answer
She measures the temperature of a solution before and after adding H2SO4.
Answers
Answer: Option (c) is the correct answer.
Explanation:
An experiment conducted by following a detailed and organized series of steps in such a manner that its result will reject or validate the hypothesis.
For example, using an acid-base indicator will help to measure the pH of a solution.
A scientific reaction is performed in controlled conditions with proper precautions unless it could be dangerous to perform the experiment.
Therefore, we can conclude that she asks her lab partner which base he thinks is hardest to study is not a scientific experiment.
you are correct because that not an experiment its a question