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Some experiments use chemicals and water, glassware for such experiments must not be dried. But glassware for the experiments that has no water in them must be drived, so water do not get in the reaction. E.g. in Grignard reactions, if water gets in a reaction, alkane will be produce instead of an alcohol. You will get not what you wanted.
But if you will perform Acid-Base Reactions, in the end you will get water anyway, so extra water that was in the glassware will not change anything.
Wiki User
∙ 10y ago
Wiki User
∙ 9y agoGlassware should not be heated before it has dried completely. This is because it can greatly decrease the effectiveness and strength of the glass while it is being heated.
Wiki User
∙ 13y agobecause if they are not, some of the stuff you collect will get stuck to the side and mess up the reading.
Wiki User
∙ 6y agoWater can destroy the Grignard reagents by protonolysys.
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What do you think must be done if a conclusion does not support the hypothesis stated at the beginning of an experiment?
Its not scientifically the right answer to the hypnosis
Why must at least two successive mass readings be equal before finishing the experiment?
In order for experiment results to be trusted, they must be both precise and accurate. Successive instrument readings help guarantee both of these.
Why an experiment must have control?
An experiment must have a control to show what would happen if no factors were changed.
What should you do next when the experiment get an unexpected result?
you must repeat and redo the experiment
What is a science experiment?
An experiment is something like if we don't know if, for example, the result of salt solution. Then we must do it for real to find out the answer. An experiment is not only in the science lab. We can do an experiment everywhere, such as: Our homes, the park,... So that's what a science experiment means. People who haven't done an experiment yet must try some time.
What do you think must be done if a conclusion does not support the hypothesis stated at the beginning of an experiment?
Its not scientifically the right answer to the hypnosis
Why must hypothesis before you do experiment?
because hypothesis is a trial idea
Why do you need to incubate the yeast before you start?
Yeast must be activated before an experiment. In order for it to metabolize sugars, it must be incubated, which activates the yeast by adding heat.
Why must at least two successive mass readings be equal before finishing the experiment?
In order for experiment results to be trusted, they must be both precise and accurate. Successive instrument readings help guarantee both of these.
What must all personnel receive before beginning an LFX?
an orientation on range operations
Precautionary measures that must observed before an experiment?
Pak u kayo ulol wlang sagot jan ..
Why an experiment must have control?
An experiment must have a control to show what would happen if no factors were changed.
Why is preparation important in science?
In order to conduct an experiment, it is expected that an individual must collect materials and some background information in order to prepare themselves before they can actually collect data in an experiment.
Why must a controlled experiment have one manipulated variable?
a controlled experiment must have only one manipulated variable becuase if the experiment had multiple manipulated variables then it would not be a controlled experiment anymore it would be a manipulated Deseret experiment
What is the variable in an experiment?
The factor that can change in an experiment
What element must a writer fully distinguish before beginning a short story?
Before beginning a short story, a writer must fully distinguish the main character or protagonist. Understanding the character's motivations, goals, and conflicts will help drive the narrative and bring depth to the story.
What should you do next when the experiment get an unexpected result?
you must repeat and redo the experiment
