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DEET may be measured in blood, plasma, or urine by gas or liquid chromatography-mass spectrometry to confirm a diagnosis of poisoning in hospitalized patients or to provide evidence in a medicolegal death investigation. Blood or plasma DEET concentrations are expected to be in a range of 0.3–3.0 mg/L during the first 8 hours after dermal ...
The molar mass of atoms of an element is given by the relative atomic mass of the element multiplied by the molar mass constant, M u ≈ 1.000 000 × 10 −3 kg/mol ≈ 1 g/mol. For normal samples from Earth with typical isotope composition, the atomic weight can be approximated by the standard atomic weight [ 2 ] or the conventional atomic weight.
The molecular mass and relative molecular mass are distinct from but related to the molar mass. The molar mass is defined as the mass of a given substance divided by the amount of the substance, and is expressed in grams per mol (g/mol). That makes the molar mass an average of many particles or molecules (potentially containing different ...
To calculate BMI, divide a person’s weight in kilograms by their height in meters squared. Translated into imperial, that’s a person’s weight in pounds divided by their height in inches ...
In 2000, the new owners reacquired the license to publish Weight Watchers Magazine from Time Inc., where Heinz had offloaded it in 1996 and where it had performed poorly; circulation recovered quickly, and the magazine was redesigned in 2003. [37] In 2001, the company launched WeightWatchers.com. [46] In 2007, it launched Weight Watchers Online ...
Mass fraction can also be expressed, with a denominator of 100, as percentage by mass (in commercial contexts often called percentage by weight, abbreviated wt.% or % w/w; see mass versus weight). It is one way of expressing the composition of a mixture in a dimensionless size ; mole fraction (percentage by moles , mol%) and volume fraction ...
Number average molar mass (M n), also loosely referred to as number average molecular weight (NAMW). Mass average molar mass (M w), where w stands for weight; also commonly referred to as weight average or weight average molecular weight (WAMW). Z-average molar mass (M z), where z stands for centrifugation (from German Zentrifuge).
The Weight Watchers diet tries to restrict energy to achieve a weight loss of 0.5 to 1.0 kg per week, [1] [3] which is the medically accepted standard rate of a viable weight loss strategy. [4] The dietary composition is akin to low-fat diets [ 1 ] or moderate-fat and low-carbohydrate diet [ 5 ] depending on the variant used.