The phrase "an exact amount of" is correct and usable in written English.
It can be used when specifying a precise quantity or measurement of something.
Example: "The recipe calls for an exact amount of sugar to ensure the cake rises properly."
Alternatives: "a precise quantity of" or "a specific amount of".
There is a common misconception that there is an exact amount of sleep that the body requires.
It has to be boiled to a certain temperature after slowly melting the ingredients together, and it has to be beaten for an exact amount of time before pouring it into a pan.
One hundred ninety-eight participants were asked to exert an exact amount of grip force marked on a dynamometer, and then asked to replicate the same amount without the visual feedback of the dial.
My husband and I put aside an exact amount of money each month for the food and the daily expenses.
The distillery won't give an exact amount of cases being produced, but said you can expect to find it on the shelves throughout 2015.
Because of this, MtGox could not give an exact amount of missing deposit funds or the total amount of bitcoins that had disappeared.
O'Rourke declined to give an exact amount, but he says these kinds of lawsuits cost Facebook hundreds of thousands of dollars.
Al Qaeda's money -- and there was lots of it, Mr. Al-Fadl said without giving an exact amount -- was held in a web of bank accounts in Europe, Asia and Sudan.
The primary standard is prepared by injecting a known exact amount of liquid agent (measured by weight or glass micropipette) in a glass Erlenmeyer of known volume, taking the effect of temperature into account.
The amount of the fines was not clear last night, and while several people said that the total would most likely be in the range of $150 million, an exact amount was not expected to be disclosed today.
He learns about 'hydrophobic core' and its immense importance in making the primary sequence fold the way it does[4], but a mapping between exact amount of hydrophobicity necessary to make a certain amount of mass fold in any of the SCOP(Structural Classification of Proteins) classes, remains elusive to him.
