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3 years ago

How do you measure moles

Chemistry

2 answers:

wlad13 [49]3 years ago

6 0

Answer:

Answers may vary

Explanation:

Mol is the amount of molecules in something. Mol are similar to donuts, if you have a dozen of something you have 12 of them. If you have a mol of Hydrogen gas you 6.02•10^23 molecules of Hydrogen gas. If you are taking a chemistry class you will probably receive questions involving converting grams to mol and vice versa.

Converting Grams to Mol:

grams of x•(1/molecular mass of x)

note: you can find molecular mass of x by looking at the masses of the elements you need to add up in the periodic table

Converting Mol to Grams:

mol of x•(molecular mass of x)

Mekhanik [1.2K]3 years ago

4 0

Mole is the SI unit of measurement used to measure the number of things, usually atoms or molecules. One mole of something is equal to 6.02214078×1023 of same things (Avogadro's number). For example, one mole of grapes is 6.02214078×1023 grapes.

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matrenka [14]

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<h3>What are polymers?</h3>

Polymers are a class of natural or synthetic substances
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1 year ago

The anion of which element has a –1 charge?

vovangra [49]

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$\sf Cl^-, Br^-, F^-$ are some of the few elements that would have a -1 charge.

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3 years ago

1)If I mixed salt in water I would expect the salt to:

zaharov [31]

Answer:

1)If I mixed salt in water I would expect the salt to: dissolve.

2) If I mixed starch in water I would expect the starch to: remain undissolved.

Explanation:

Hello,

In this case, since salt, which is commonly known as sodium chloride (NaCl) is an ionic compound, it is very likely to get dissolved in water, therefore, we would expect the salt to dissolve and form a liquid solution.

Moreover, since start is mainly composed by C-C, C-O and C-H bonds which are nonpolar, it we can say it is usually insoluble in water, therefore we will expect starch to remain undissolved but undergoing a process called gelatinization in which a suspension in formed until a slightly solid consistency.

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3 years ago

The activiation energy required for a chemical reaction can be decreased by?

ollegr [7]

Answer:

Explanation:

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3 years ago