Which process uses a volume of solution of known concentration to determine the concentration of another solution?(1) distillation (3) transmutation(2) substitution (4) titration
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Answer: Titration
Explanation: Titration is defined as the process where a solution of known concentration is used to determine the concentration of an unknown solution.
Volumetric titrations are usually used for neutralization reactions where an indicator is used to know the acidic or basic nature of solution.
The normality equation used at a point where neutralization occurs during the titration is:
= Normality of acid solution
= volume of acid solution
= Normality of basic solution
= Volume of basic solution
Related Questions
Predict the products in the following reaction:AgNO3(aq) + Na2CrO4(aq) → A. AgCrO4(s) + Na2NO3(aq) B. Ag2CrO4(s) + NaNO3(aq) C. Ag(CrO4)2(s) + Na2NO3(aq) D. Ag(CrO4)3(s) + Na(NO3)2(aq)
Which is the equivalent of 750 joules? a. 0.750 kJ b. 7.50kJ c.75.0 kJ d. 750.kL
#1. The arrangement of atoms at the peak of the activation energy barrier is known as the _____. A. activation rate B. activated complex C. transition state D. both B and C #2. Two opposing reactions (A + B C + D) occurring simultaneously at the same rate is an example of:A. reversibility./B. chemical equilibrium./C. neither a nor b/D. both a and b #3. A substance that interferes with the action of a catalyst is known as a(n) _____. A. negative inhibitor /B. either an inhibitor or negative inhibitor /C. inhibitor /D. activated complex #4. The reducing agent in the reaction described in Fe + 2HCl → FeCl2 + H2 is A. Fe./B. HCl./C. FeCl2.
What physical state of matter is associated with the strongest attractive forces between particles (molecules, ions, or atoms)?
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(2) 119 atomic mass units
(3) 198 atomic mass units
(4) 277 atomic mass units
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Protons have a relative mass of 1
Gold-198 is a radioactive isotope of gold, which means it has a different number of neutrons, but the same number of protons and electrons
So the answer is (1) 79 atomic mass units
The total mass of protons in a gold-198 atom is about 79 atomic mass units. This calculation considers the 79 protons, each with a mass of approximately 1 amu.
The correct answer is option 1.
The total mass of protons in an atom of gold-198 is approximately 79 atomic mass units. This is determined by considering the number of protons in the nucleus, which is 79 for gold-198. Each proton has a mass of approximately 1 atomic mass unit (amu). Therefore, multiplying the number of protons by the mass of one proton yields the total mass of the protons.
In the case of gold-198:
Total mass of protons = Number of protons × Mass of one proton
Total mass of protons = 79 protons × 1 amu/proton
Hence, the total mass of protons in an atom of gold-198 is approximately 79 atomic mass units.
In summary, the calculation involves recognizing that the mass number of an isotope is the sum of protons and neutrons. In this specific case, gold-198 has 79 protons, and the total mass of its protons is around 79 atomic mass units.
Therefore, from the given options the correct one is 1.
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Answers
Answer:
The solution in the buret, during a titration is called titrant.
Explanation:
A titration is a useful process, that makes you know the concentration of a solution. A titrant solution (burette) is evaluated against a titrand to control the pH changes against the volume aggregate. Only a strong acid with a strong base, a strong base with a strong acid, a weak acid with a strong base and a weak base with strong acid are valued.
When the pH reaches the equivalence point, it is said that the normality of the acid by the milliequivalents, is equal to the basic normality by its milliequivalents. In conclusion, the entire base / acid became its conjugate pair.
To check this sudden change in pH, a substance is used, called Indicator that changes the color of the titrand (analyte).
Final answer:
In a titration analysis, the substance in the buret is called the 'titrant'. It is used to react with the analyte, the sample solution whose concentration we're measuring. The goal is to reach the endpoint, the point when a distinct visual change indicates that the titrant has completely reacted with the analyte.
Explanation:
In a titration analysis, the solution in the buret is called the titrant. This solution contains a known concentration of a substance. During a titration, this titrant is added incrementally to a sample solution, called the analyte, which contains the substance whose concentration is to be measured. The titrant and analyte undergo a chemical reaction of known stoichiometry.
By measuring the volume of the titrant solution needed to completely react with the analyte, scientists can calculate the concentration of the analyte. This point where the titrant has completely reacted with the analyte is termed the equivalence point of the titration. The process of adding the titrant is halted when a distinct change is visually detected in the solution - this could be a color change, for example. This is known as the end point.
Learn more about titration here:
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copper wire, metal nail, battery
magnet, copper wire, metal nail
battery, heat source, copper wire
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Answer:
copper wire, metal nail, battery
Explanation:
To create an electromagnet, the material to be magnetized (such as a metal nail) is placed inside a solenoid, the ends of the coils are connected to a circuit that includes a battery.
Current is allowed to flow for a few seconds and then cut off. The polarity of the magnet depends on the direction of flow of current in the solenoid.
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Answer: a
Explanation: it just like simple math but it just adding stuff
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The answer is -30 N
The explanation:
- to make the box move. so,the horizontal force must be greater than the frictional force.
-and when the horizontal force applied is 30 N. So, the box will remain stationary if the frictional force is equal in magnitude but opposite in direction to the horizontal force. means frictional force = -30 N
This is also being indicate that vertical force due to gravity is equivalent to the normal force when gravity force = 8 N and normal force =8 , meaning the box does not move vertically.
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the answer is -30*N.................