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Why do liquid vitamins for babies come with a dropper pipette rather than a container marked with graduated lines?
Wiki User
∙ 16y ago
I would imagine it's because small babies do not yet drink out of open containers. Another reason would be that babies need only small amounts of liquid vitamins, and these small amounts are easier to measure in a dropper. The droppers ease measuring and administering the vitamins.
Wiki User
∙ 16y ago
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What would you use to measure volume?
It depends on the amount you want to take. If it is microlitres, you can use a micropipette, millilitres, a pipette (a burette would be more accurate), and if greater than that, it is best to use a large graduated cylinder. A graduated cylinder is more inaccurate than a pipette, but at volumes of 500ml for example, it is impractical to use a pipette.
What 4 items can hold less then 10 mL?
A 1 ml pipette, a 2 ml pipette, a 5 ml pipette, and a 0.5 ml pipette.
How many drops of water can fit into a penny?
Ideally, everyone performing the experiment would include the following: - distilled waterThere are a lot of factors involved. The cohesion and adhesion ('stickiness') of water molecules can be effected by things like oils (on surface pennies from peoples' skin) and other contaminates on the penny. The size of the dropper or pipette will determine the size of each water droplet - the larger the drop, the fewer number of drops will fit on the penny. The manner in which the water is added to the penny is also a factor. Water has a cohesive nature (the molecules are kind of like magnets and are attracted to one another). Therefore, if the drop from the pipette is allowed to touch the water already on the surface of the penny, the water can be 'pulled' out of the dropper. When this happens, the size (volume) of the drop is not always the same - it could be a very small amount (which will result in a very large number of drops), or a large amount. Ideally, everyone performing the experiment would include the following: - distilled water - same type/size of calibrated dropper/pipette - same date of penny - penny cleaned as thoroughly as possible using same cleaning procedure - same 'dropping' procedure
How get the accutare titration value?
Titration value describes how accurately a substance is dissolved in another substance. In order to find this number, you need a pipette, a burette, and a volumetric flask.
Why do you need to know the Independent and Dependent Variables before you make your hypothesis?
Actually, I believe that you set out your hypothesis first. If your teacher has perhaps told you to set out your variables first, you may wish to direct her towards a reliable source of information like a textbook - all of mine explicitly say that you must first create a hypothesis to know what the variables are to be:HypothesisPredictionInvestigationAnalyse the dataRefine the hypothesis, if necessaryYour teacher is not wrong, but in all truth, the variables are implied by the hypothesis e.g.You notice that the salmon have not returned to your local river this year. Your hypothesis:The salmon have not returned due to abnormally low levels of oxygen in the water, caused by hot water ejected into the river by factories.This implies that the variables should be:Independent: the location of a sample (as you will sample the oxygen levels at different locations)Dependant: the concentration of oxygen in the water at these locationsControlled variables: Time of day, time of year.Therefore, I do not understand how you can possibly define the variables without first defining the hypothesis. Surely it is only possible this way.The only exception would be if you are blindly going about a random experiment. For example, you have been given 20 cm2 of HCl in concentrations of 0.1, 0.2, 0.3, 0.4 and 0.5 mol/dm3 and an excess of NaOH, 0.1 mol/dm3. You have a conical flask, a funnel and a burette (like a long thin cylinder of glass, with a controllable output, whereby you can determine exactly how much of the solution you are adding; similar, but more accurate, than a pipette). What do you do?You say, I am going to titrate this acid and this alkali by measuring the amount of the alkali (the NaOH) which I add to the acid (the HCl) to neutralise it. You do the experiment, collect the data, and present it perhaps in a graph. I won't explain the experiment to you, as it may only confuse you.In this case, you have some meaningless results. You attempt to solve this problem by making a conclusion and saying 'By increasing the concentration of the acid, more alkali is needed to neutralise it.'. Having said this, you will then have conducted an experiment without a hypothesis at all. However, from here, you may create a hypothesis to further the meaning of the experiment so that in future, the experiment can be carried out again, but with different parameters. Your hypothesis may be 'The greater the concentration of any acid, the greater the volume of an alkali needed to neutralise it.' Whereby you would carry the same experiment out, but with different acids etc.. The ultimate effect of the experiment is that you have blindly done one without a hypothesis.You cannot base the hypothesis on anything other than an observation you have made (like the fact that light is reflected by shiny objects, for example). From the hypothesis, you can derive what the variables, including the control variables will be for the experiment.I hope this answers your question.
What is the purpose of a dropper pipette?
The purpose of a dropper pipette is to administer only a small drop of a liquid to something. The dropper pipette is a tool that will allow you to squeeze a single drop of the liquid it contains.
What is used when transferring liquids from one container to another?
Use a funnel
What is the use of pipette in laboratory apparatus?
A pipette is a glass or plastic dropper; it comes in a range of sizes between ·5 μL and 50 mL. The sides can be graduated for precise and accurate introduction of fluid reagents.
What is another name for Pasteur pipette?
Dropper
What do you call the glass with measurements that is attached to a pipette?
The glass with measurements that is attached to a pipette is called a graduated cylinder.
What is the differences between pipette and dropper?
A slender graduated tube used in a lab for measuring! Hope this helped!!
How do you transfer small amount of liquid?
A pipette or dropper
What instrument will you use to find liquid volume?
A graduated cylinder, a volumetric flask, a pipette, any graduated or calibrated container that will safely hold the fluid, a flow meter, a set of scales can also be used if the specific gravity of the fluid is known.
What is a dropper used for in science?
In science, a dropper is used for transferring small amounts of liquid from one vessel to another. A dropper is also known as a Pasteur pipette.
What is dropper used for in science?
In science, a dropper is used for transferring small amounts of liquid from one vessel to another. A dropper is also known as a Pasteur pipette.
What is the uses of Pasteur pipette?
A Pasteur pipette is basically an eye dropper. It is used to collect liquids, to be utilized for different purposes.
What a eye dropper?
A glass or plastic pipette with a rubber bulb that is used to drop medicines into the eye.
