There are a number of ways to express the relative amounts of solute and solvent in a solution. This page describes calculations for four different units used to express concentration:
Percent Composition (by mass)
We can consider percent by mass (or weight percent, as it is sometimes called) in two ways:
We need two pieces of information to calculate the percent by mass of a solute in a solution:
Use the following equation to calculate percent by mass:
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Molarity
Molarity tells us the number of moles of solute in exactly one liter of a solution. (Note that molarity is spelled with an "r" and is represented by a capital M.)
We need two pieces of information to calculate the molarity of a solute in a solution:
To calculate molarity we use the equation:
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Molality
Molality, m, tells us the number of moles of solute dissolved in exactly one kilogram of solvent. (Note that molality is spelled with two "l"'s and represented by a lower case m.)
We need two pieces of information to calculate the molality of a solute in a solution:
To calculate molality we use the equation:
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Mole Fraction
The mole fraction, X, of a component in a solution is the ratio of the number of moles of that component to the total number of moles of all components in the solution.
To calculate mole fraction, we need to know:
The mole fraction of A, XA, in a solution consisting of A, B, C, ... is calculated using the equation:
To calculate the mole fraction of B, XB, use:
by the amazing PITOGO HIGH SCHOOL of Makati City
III-JADE
There are a number of ways to express the relative amounts of solute and solvent in a solution. This page describes calculations for four different units used to express concentration:
Percent Composition (by mass)
We can consider percent by mass (or weight percent, as it is sometimes called) in two ways:
We need two pieces of information to calculate the percent by mass of a solute in a solution:
Use the following equation to calculate percent by mass:
Molarity
Molarity tells us the number of moles of solute in exactly one liter of a solution. (Note that molarity is spelled with an "r" and is represented by a capital M.)
We need two pieces of information to calculate the molarity of a solute in a solution:
To calculate molarity we use the equation:
Molality
Molality, m, tells us the number of moles of solute dissolved in exactly one kilogram of solvent. (Note that molality is spelled with two "l"'s and represented by a lower case m.)
We need two pieces of information to calculate the molality of a solute in a solution:
To calculate molality we use the equation:
Mole Fraction
The mole fraction, X, of a component in a solution is the ratio of the number of moles of that component to the total number of moles of all components in the solution.
To calculate mole fraction, we need to know:
The mole fraction of A, XA, in a solution consisting of A, B, C, ... is calculated using the equation:
To calculate the mole fraction of B, XB, use:
by the amazing PITOGO HIGH SCHOOL of MAKATI CITY
III-JADE
The concentration of solution means to express the amount of solute in specific amount of solvent or solution, there are different ways to represent the concentration of a solution as,
1-Molarity.. moles/dm3
2-Molality.. moles /K.g
3-Normality .. gram equivalent/dm3
4-Mole fraction
5-ppm
6-ppb.
im not so sure but from what we've just studied this is the list:
1.percent by mass Pm
2.percent by volume Pv
3.percentage mass-volume Pm/v
4.mole fraction Nf
5.molarity
6.molality
Concentration is usually expressed in moles per liter, which is called molarity. You could also use moles per mL and other measures of volume. It is also possible to convert this to any measurement of mass/volume (such as grams per liter, milligrams per liter, etc)
Molarity. which is Moles/Liter. molarity is expressed as captial m. (M)
so if you have 15 M HCl(aq) it is MUCH more concentrated than 5 M HCl(aq)
1.percent concentration
a.percent by mass
b.percent by volume
c.percent by mass-volume
2.molarity
3.molality
4.mole fraction
5.normality
In chemistry we might use moles per litre. In physics we'd be more likely to use g per litre or g per centimetre cubed.
Molarity (M) which is moles/liter of solution, molality (m) which is moles/kg solvent and grams/ml are 3 common ways to express concentration.
- molar concentration (official in SI)
- molal concentration (obsolete)
- concentration in grams/litre
etc.
solutions are used in various different ways. They all are useful in our daily lives!!:)
Percent by mass, percent by vol, molarity,molality, and mole fracton
There are more than 2 kinds, but perhaps you refer to molar (M) and molal (m). Or maybe you refer to weigh/volume and weight/weight. Or, maybe even you refer to % by mass and % by volume. And there are still others.
ACID
they are the same but just with different ways of saying it.
solutions are used in various different ways. They all are useful in our daily lives!!:)
Numerical ways of expressing information are called statistics.
No, they are just different ways of expressing the same thing.
They are not alike, they are different, but they can be identical in value. Example :- 3/4 and 0.75 are different ways of expressing the same quantity and they are not alike at all.
p
Nothing. Those are just two different ways of expressing the same thing.
Jackson Pallock became famous for painting different paintings in the abstract field of study. He was a big painter in expressing his art in different and new ways.
4.25,4¼,17/4,425%
They are all the ways of expressing numbers excluding the ones that you already have!
1·· a style that involves indirect ways of expressing things.
you say cute as if its a bad thing 'only cute' Maybe you just need to find out how he actually feels. I mean different guys have different ways of expressing how they feel towards girls
Any way you feel comfortable but the stereotypes are well known