It's because of something called binding energy carbon-12 has a mass of 12 amu by definition theoretically, this would mean that each proton and each neutron has a mass of one amu, but this turns out not to be so the actual mass of a proton is about 1007 amu, and the mass of a neutron is about 1008 amu if you add. Cfa level 1 - statistical concepts and market returns - basic calculations. Finding the mean enter the scores in one of the columns on the excel spreadsheet (see the example below) after the data have been entered, place the cursor where you wish to have the mean (average) appear and click the mouse button select insert function (fx) from the formulas tab a dialog box will appear. It retailed for around £79 ($10128) by the end of the decade, similar calculators were priced less than £5 ($641) the first soviet union made pocket-sized calculator, the elektronika b3-04 was developed by the end of 1973 and sold at the start of 1974 one of the first low-cost calculators was the. The relative formula mass of a substance, shown in grams, is called one mole of that substance so one mole of carbon monoxide has a mass of 28 g, and one mole of sodium oxide has a mass of 62 g the table shows some more examples of relative formula mass calculations, using the relative atomic mass values given.
It is essentially a weighted average for the entire coating if one component in the mixture has a higher voc content, or is added in a higher quantity than the others, then that component more strongly influences the voc of mixture this will be discussed in further depth later in this guide. 1 drug calculations when calculating how much of a drug is required, working with the formula helps the accuracy of the calculation always remember this formula: what you want x quantity it comes in what you have 1 it's ok to use a calculator 1 a patient requires 4 mg of morphine ivi morphine is available as. 1 drug calculations refresher sheet conversions: grams mg mcg litres ml body weight: 4mg/kg means give 4mg for every kg the person weighs a 75 kg person would need 75 x 4 = 300mg tablets: amount prescribed = number required amount in a tablet dosage calculations (liquids or injections): required drug.
Quantity = 1 step 2: plug in what you know into the formula and simplify x 1 = 2 tablets therefore, the nurse should give 2 tablets the same formula can be used for dosage calculations where the medication is available as amount per certain volume in these types of calculations, the volume available on hand is the. Cfa level 1 - portfolio calculations learn the essentials behind portfolio calculations, including expected return and portfolio variance includes formulas for all major factors. Higher chemistry, calculations (unit 1) higher bitesize is the easy to use revision website from bbc scotland. Basic rules for uncertainty calculations 1) an absolute uncertainty is denoted by the symbol “∆“ and has the same units as the quantity types of uncertainties: 2) a relative or percent uncertainty is denoted by the symbol “ε“ and has no units to convert back and forth between the two types of uncertainties.
Yield percentage: explore the various components of a yield test and learn how to identify the factors that might affect yield percentage ➢ cost calculations: discover one of the most important elements in budgeting and predicting your finances ➢ edible portion cost: learn how cost affects purchasing and your recipe. This page looks at how to do routine electrolysis calculations the faraday constant the faraday constant is the single most important bit of information in electrolysis calculations make sure you really understand the next bit coulombs the coulomb is a measure of the quantity of electricity if a current of 1 amp flows for 1.
Example of calculating the ph of a buffer solution using the henderson- hasselbalch equation, including the ph of the buffer solution after adding some naoh convert the decimal (05) into a fraction (1/2) dividing by the fraction is done by multiplying by the reciprocal(2/1) and you get 006 good answer • 16 votes. For imperial weight calculations certain measurements (fractions) need to be converted to decimal inches for an accurate calculation it mm, size m, weight kg/sheet 0300, 2 x 1, 47 0376, 2 x 1, 59 0400, 2 x 1, 63 0457, 2 x 1, 72 0500, 2 x 1, 79 0559, 2 x 1, 88 0600, 2 x 1, 94 0710, 2 x 1, 111 0800, 2 x 1 , 126.
Chemical calculations as no atoms are made or destroyed in chemical reactions, and we know the relative masses of each type of atom, we can predict the masses of products and reactants involved in chemical reactions revise test 1 2 3 4 page 1 of 4. You will need to calculate the correction factor for the given conditions (see table in labs for correction factor according to given pressure (760 mmhg) and temperature (20°c) the correction factor is this example is 0907) calculating ve ([ ] ) ([ ] ) ∴ ve stpd= 2721 lmin-1 in the laboratory gas is measured at atps. For each shipment the volume-weight is calculated and compared with the actual weight in kilos this calculation is done according an approved formula in air freight 1 cbm (cubic meter) equals 167 kilo in ocean freight (lcl) 1 cbm is calculated as a maximum of 1000 kilo, while in road transport 1 cbm matches 333 kilo. Overview in queries, rows with no value (null) are excluded from results impact: null values can skew percentage and average calculations best practice step 1: add the sent mail metric for each query best practice step 2: before calculating percentages or averages, replace null values with zeros.