A reaction rate is typically expressed as the change in the amount of reactants or products over a certain period of time. So the option b is correct.
The rate of a chemical reaction can be measured by monitoring the number of moles or molecules of a particular substance consumed or produced per unit of time. Hence, the expression "number/time" best represents a reaction rate. For example, if we observe the formation of 5 moles of product X in 2 minutes, the reaction rate of X would be 5 moles per 2 minutes (5 moles/2 minutes). This quantitative approach allows scientists to study reaction kinetics and understand the speed at which reactions proceed, enabling the optimization and control of various chemical processes. Hence option b is correct.
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Answer:
Explanation:
We are given that the material of the object is the same as the previous object
In the previous question, we determined the density of the material is 2.5 g/cm3
We are given the mass of this object is 382 g
To find the volume, we can use the equation:
Plugging in the values we know:
Solving for Volume:
Volume = Mass / Density
Answer: the percentage of acetic acid will be low.
Explanation: The major aim during titration of acids and bases is to determine the endpoint , that is exact point where the acid in the beaker changes colour, (in this case, pink )with an additional drop from the burette containing the base, since it is usually difficult to mark the equivalence point that tells us when all the substrate in the beaker has been neutralized completely with the buretted substance.
Overshooting the end point is an error which can occur when the person involved in the the titration accidently goes beyond this endpoint by adding too much of the substance(base) from the burette into the beaker missing the exact endpoint.
This implies that the person has added too much of the burreted liquid, ie the base than required , making the acid in the beaker to continue to react resulting to a lower concentration of the acid (acetic acid) with excess base.(NaOH)
Answer:
Explanation:
1) Increase the amount of charge on each object
2) Decrease the distance between each object
3) Increase the mass of the objects.
just colmpeated this in usa test prep 100% correct
• 3 (100 cm³) conical flasks
• 3 balloons
• 3 rubber bands
• 3 indigestion tablets
• water
• alcohol
• measuring cylinder
• stopwatch
• mass balance
The paleoatmosphere refers to the Earth’s atmosphere in the geological past. The paleoatmosphere was dominated by nitrogen, carbon dioxide and methane. These gases are generated by the radioactive decay of Potassium. During this pre-biological atmosphere, it is thought to have been reducing, to have highly contained virtually no free oxygen, and virtually no argon. Therefore the major gases on this period are the Nitrogen and Carbon Dioxide.