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An aqueous solution of sodium hydroxide contained in a bottle is labelled 2M. Determine the mass of sodium hydroxide used in preparing?
Wiki User
∙ 7y ago
You cannot answer this without also knowing the VOLUME of the 2 M solution. For example, if you have 1 liter of 2 M NaOH, the the mass contained in that bottle will be 1L x 2 mol/L x 40 g/mol = 80 g.
If, however, you have 2 liter, then the mass of NaOH contained in that bottle will be 160 g. And so on.
Wiki User
∙ 7y ago
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The molecule referred to as ''molecule A'' in the equation above is?
The one labelled "molecule A".
What are the hazard symbols?
CorrosiveAttacks and destroys living tissues, such as skin and eyes.Concentrated solutions of strong acids such as sulphuric acid would be labelled with the corrosive symbol. Concentrated solutions of strong alkalis such as sodium hydroxide would also be labelled this way. Anyone using a corrosive substance should wear gloves and eye protection, such as goggles or a face shield.IrritantNot corrosive but will make the skin red or blister.The dilute solutions of acids and alkalis that you normally use at school would be labelled with the irritant symbol. Anyone using an irritant substance should wear eye protection such as goggles, and they should take care to wash any spills off their skin immediately.ToxicCan cause death, eg if swallowed, breathed in or absorbed by skin.Lead oxide and chromium oxidewould be labelled with the toxic symbol. Anyone using a toxic chemical would need to take great care. They should wear gloves and eye protection, and they may wear a mask over their mouth and nose or handle the chemical in a fume cupboard.HarmfulSimilar to toxic substances but not as dangerous.Copper(II) sulphate would be labelled with the harmful symbol. Anyone using a harmful substance should wear eye protection such as goggles, and they should take care to wash any spills off their skin immediately.flammableCatches fire easily.Ethanol and propanone would be labelled with the highly flammable symbol. In addition to the normal precautions of wearing eye protection, anyone using a highly flammable substance should take care to keep it away from flames and sparks, and also from oxidising substances.OxidisingProvides oxygen to make other substances burn more fiercely.Potassium manganate(VII) would be labelled with the oxidising symbol. Oxidising substances do not burn themselves but they provide oxygen for flammable substances to burn. In addition to the normal precautions of wearing eye protection, anyone using an oxidising substance should take care to keep it away from flammable substances, including clothing.
What is the safety symbol of acid?
There isn't a specific hazard symbol for acidic substances but many acids will be labelled as corrosive and, or harmful (and an irritant).
Why your gas fireplace smells like gas when it goes off?
On many gas valves, on top there is a threaded port labelled `VENT`. That is where the residual gas within the valve is released from when the valve closes.
Non radioactive labeling oligonucleotide?
Non radio active labeling for oligonuleotides include: Biotin-labelled oligonucleotides - this biotin can be used to link the oligonucleotide to streptavidin-protein conjugates, streptavidin affinity columns, or labelled streptavidin. Attachment of a biotin molecule to the 3' terminus can also be used to prevent 3' exonuclease digestion and 3' extension during amplification reactions. Digoxigenin (DIG) is mainly used as a non-isotopic label for DNA and oligonucleotides in a wide range of applications: diagnostics, sequencing, blot applications, and in situ hybridization. The digoxigenin label can be detected with enzyme-linked immunoassays for anti-digoxigenin protein conjugates, and visualized through a chemiluminescent reaction. DNP means 2,4-Dinitrophenyl. DNP can be introduced anywhere in the sequence and on either terminus.DNP is an alternative to digoxigenin in cases where two different genes must be detected together. Oligonucleotides labelled with DNP can therefore be used in analytical tests based on anti-DNP antibodies. For other non radioactive labeling, check this site: www.biosyn.com, they offer various oligonucleotide modifications and labelings.
How can scientists determine a genetic sequence using a gel?
DNA polymerase with a mix of nucleotides and labelled dideoxynucleotides
Why is sodium hydroxide hazardous to use?
Sodium hydroxide is a very strong chemical that is also known as lye and caustic soda. This article discusses poisoning from touching, breathing in (inhaling), or swallowing sodium hydroxide. On contact, sodium hydroxide turns skin into soap; such chemical "burns" are difficult to treat.
How do you determine if a food has pig sperm?
None of it does so don't worry. Some people do eat testicles called mountain oysters bu they are not from pigs either and clearly labelled.
What is labeled diagram?
A diagram of which all the parts of picture have been labelled by their name is known as labelled diagram for e.g. in the diagram of human body the parts like head neck limbs are labelled
How can you tell if detergent is biological or not?
It normally says so on the packaging. If you cannot read the information on the packaging, it will be impossible for a layman to determine the nature of the detergent. If this is important to you, buy a package that is clearly labelled "bio" or "non-bio".
What is revotril?
found a labelled prescription
Is it labeled or labelled?
US spelling would use labeled and British spelling would use labelled, so both can be used.
How do you do to the power on a computer?
If you have a scientific calculator, it should have a key labelled either xy, or yx. Use this for powers.If you have a scientific calculator, it should have a key labelled either xy, or yx. Use this for powers.If you have a scientific calculator, it should have a key labelled either xy, or yx. Use this for powers.If you have a scientific calculator, it should have a key labelled either xy, or yx. Use this for powers.
Draw a labelled diagram of the hydra?
done
Labelled diagrams of sublimation?
Mouhamed assaad
How quadrant are they labelled?
They are labelled with Roman numerals, anti-clockwise from top-right.Top Right = ITop Left = IIBottom Left = IIIBottom Right = IV.
Does labeled have two l's?
It is "labeled" in American English and "labelled" in British and Canadian English.
