amount of substance


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amount of substance

[ə′mau̇nt əv ′səb·stəns]
(chemistry)
A measure of the number of elementary entities present in a substance or system; usually measured in moles.
References in periodicals archive ?
As frequency of substance use is not always correlated with harm to the user's physical, cognitive, or social functioning (Caldeira et al., 2008), the emphasis in the current study was on problematic patterns of substance use, and not simply on the absolute amount of substances used by students.
Do you know that a percentage is not a unit that measures "amount of substance" but (in this case) amount of substance in relation to other substances?
" In blood, heroin will generally stay for around 48- 72 hours depending on the amount of substance and how long ago was it taken," said PSM Chandran, reputed sports medicine doctor, who is also in the national antidoping disciplinary panel.
Table 4 shows the street kids' answers as to the frequency and amount of substance use.
The post-match blast delivered by Stoke boss Tony Pulis about some of Chelsea's diving antics had a fair amount of substance too.
What about when you go from sand that is spread to a pile?" The aim is to develop children's understanding that a thinly spread out substance can be condensed into a pile, and whilst appearing smaller, is actually the same amount of substance.
SI and Metric Unit Cube Quantity SI Unit Metric Unitl Length metre (m) metre (m) Mass kilogram (kg) kilogram (kg) Time second (s) second (s) Electric current ampere (A) ampere (A) Temperature kelvin(K) Degree CeliusfC) Luminous intensity candela (cd) candela (cd) Amount of substance mole (mol) ..
The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12; its symbol is "mol."
In his foreword written for Harmony, a book written by Yan Lijin, Mushahid said his book combines rigorous research of a scholar, with an impressive amount of substance provided by his experience and expertise as a hands-on professional.
He also seems to climb on the wagon far too easily, and there's not a huge amount of substance to the predictable plot.
It's basically pretty well acted, too, by Huw Higginson and Hannah Waterman, who find a fair amount of substance in these characters, although a few rough edges were evident on opening night.
"A mole is an amount of substance that contains the same number of elementary units as there are [sup.12]C atoms in 12.00000 g [sup.12]C."