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Is the freezingbof mercury a reversible or irreversible physical change Explain your answer?
The freezing of mercury is a reversible physical change because it can be melted back into a liquid state through the application of heat. When mercury freezes, its molecules slow down and solidify into a crystalline structure, but this process can be reversed by adding energy to break these bonds and return it to its liquid form.
Suppose your sample contain a volatile impurity.would your determination of percent of water in hydrate be too high or low explain your answer?
If your sample contains a volatile impurity, the determination of the percent of water in the hydrate would be too low. This is because during the heating process to remove water, the volatile impurity would also be removed, leading to a lower overall mass measurement and thus an underestimation of the water content.
How do you explain why phase changes are reversible?
Phase changes involve a change in the arrangement of particles while maintaining the same chemical composition. Since no new substances are formed during a phase change, it can be reversed by providing or removing energy to allow the particles to rearrange back to their original state. This reversibility is a result of the conservation of matter and energy principles in nature.
How do chemists explain this difference?
Chemists explain differences in properties or behavior by looking at the molecular structure of substances. Variation in molecular structure can lead to differences in physical, chemical, and biological properties. By understanding how atoms are arranged and interact within molecules, chemists can explain why substances exhibit different characteristics.
A procedural change would be required if a student wanted to determine the acidity of tomato juice by titrating a juice sample with NaOH solution Briefly explain?
A procedural change would be required so that the student includes an indicator, like phenolphthalein, in the tomato juice sample, which changes color at the endpoint of the titration. This indicator helps visually identify when all the acid in the tomato juice has been neutralized by the NaOH solution, ensuring accurate determination of the juice's acidity.
Define the rationale of the study?
study rationale explain the goal and design of the study
How can you explain your determination?
you can explain your determination by explaining what you are good at
Can you make a recommendation to the psychologist and explain the rationale behind your choice?
Yes, you can. However, the psychologist may or may not accept your recommendation, and might question your rationale, so be prepared for that.
What is self determination and were the colonial territories granted the right of self determination at the end of ww1?
Explain the concept of slef-determination and critically examine its application to multi-ethenic societies.
What is rationale of the study?
The rationale of a study is the reason behind why the research is being conducted. It should explain the significance of the research question, outline gaps in current knowledge, and justify the need for the study to be conducted to advance scientific understanding.
Explain the rationale for selecting shareholders wealth maximizatio as the objective of the firm?
Explain the rationare for selecting shareholder wealth maximization as the objective of the firm.Include a consideration of profit maximization as an alternative goal
Is because a answer?
"Because" is a conjunction that introduces a reason or explanation for something. It is commonly used in responses to explain the rationale behind a statement or action.
Identify and explain the rationale for developing different market segment in service industry?
gaandu maketing ki book khol aur khud dhund
How would one explain the coefficient of determination?
The coefficient of determination, is when someone tries to predict the outcome of the testing of a hypothesis, or their guess at to what will happen. It helps determine how well outcomes are determined beforehand.
Price and output determination under oligopoly?
Explain how price and output decision are taken under conditions of oligopoly.
Explain Why physical changes can be reversed but chemical changes cannot?
Physical changes are generally easy to reverse because NO ENERGY is produced by the substance.A Chemical change cannot be reversed because ENERGY is produced by the substance forming a new substance.
Is caffeine considered a drug?
Absolutely. Caffeine is physically addictive; once you start using it, your body craves more, and it has less of an effect on you. Those people who "need" a cup of cofffee every day, or a soda? That is a mild form of caffeine abuse.
