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conversions&formulas
commonly used conversions and formulas
| Question | Answer |
|---|---|
| how to convert % to fraction | % over 100 Ex: 5% = 5/100 |
| how to covert fraction to % | divide fraction and multiply times 100 Ex: 7/100 = 0.07 x 100 = 7% |
| how do you write a ratio | with a colon Ex: 1:2 means 1 to two |
| unit for gram | g or gm |
| unit for liter | L |
| unit for meter | m |
| unit for kilogram | kg |
| how many g in a kg | 1000 |
| unit for milligram | mg |
| how many mg in a g | 1000 |
| how many mg in a kg | 1000x1000 = 1000000 |
| unit for microgram | ug or mcg |
| how many mcg in a mg | 1000 |
| 1000g = ___ kg | 1 |
| 1L = _____ mL? | 1000ml |
| units of length | miles, inches, meters, kilometers |
| units of weight | pounds, ounces, grams, mg, kg, mcg |
| units of volume | liters, ml, cups, tsp, tablespoon, *fluid ounces |
| mg is a unit of | weight |
| ml is a unit of | volume |
| mm is unit of | length |
| feet is a unit of | length |
| cup is a unit of | volume |
| pound is a unit of | weight |
| how many cups in a pint? | 2 |
| how many pints in a quart? | 2 |
| how many quarts in a gallon | 4 |
| how many pints in a gallon | 8 because there are 4 quarts and each quart has 2 pints |
| how many cups in a gallon? | 16 because there are 2 cups in each pint and 2 pints in each quart and 4 quarts in each gallon: 2x2x4=16 |
| abbreviation for teaspoon | tsp |
| abbreviation for tablespoon | Tbsp |
| how many teaspoons in a tablespoon? | 3 |
| how many mL in a tsp | 5 |
| how many ml in a Tablespoon | 15 |
| how many fluid ounces in a cup | 8 |
| how many weight ounces in a pound | 16 |
| how many mL in 1 oz | 30 |
| cc stands for what | cubic centimeter |
| cc is equal to how many ml? | 1cc = 1ml |
| abbreviation for grain | gr |
| 1 grain = ____ mg | 65mg |
| abbreviation for dram | dr |
| 1 dram = ___ ml | 4ml |
| 1 cup = _____ ml | 240 ml |
| 1/2 cup is how many oz? | 4oz |
| 130 mg is how many gr? | 2 gr |
| w/w % concentration is written as | g/100g or any unit of weight as long as top and bottom are in SAME units |
| v/v % concentration is written as | ml/100ml or any unit of volume as long as top and bottom are SAME units |
| w/v % concentration is written as | g/100mL notice, units are not the same!! |
| formula for creating a solution of a different volume and concentration | V1C1 = V2C2 where V1 & C1 are initial volume & concentration and V2 & C2 are desired volume and concentration |
| How many ml of 50% dextrose needed to make 100ml of 10% dextrose solution? | V1* 50 = 100 * 10 V1= 1000/50 =20ml of 50% dextrose needed then q.s to 100 ml |
| q.s means what? | quantity sufficient |
| 3cc = how many ml | 3 |
| 15 ml = how many tsp | 3 |
| 15ml = ___ cup | 0.06 c |
| 32 oz = ___ lb | 2 |
| 40 oz = ___ lb | 2.5 |
| 1 tsp = ___g | 5 g because 1 tsp = 5ml and 1 ml = 1 g |
| 1 lb = ___ g | 454g |
| 15 kg = ____ lb | 33 lb |
| 2 gr = _____ mg | 130 |
| 12 lb 4 oz = ___ lbs | 12.25 |
| 76 lb = ___ kg | 34.5 |
| 20 oz = ___ cc | 20 oz x 30ml/oz = 600ml = 600 cc |
| 5Tbsp = ___ gm | 5 Tbsp x 15ml/tsp = 75 ml = 75gm |
| formula to convert temp in F to C | Tc = (5/9)*(Tf-32) |
| formula to covernt temp in C to F | Tf = [(9/5)*Tc]+32 |
| 32 degrees F = ___ C | 0 degrees C Tc = (5/9)*(Tf-32)= (5/9) * (32-32) = 5/9 * 0 = 0 |
| 85 degrees F = ___ C | 29.4 degrees C Tc = (5/9)*(Tf-32) = (5/9) * (85-32) = (5/9)*53 = 29.4 |
| 102 degrees F = ___ C | 38.8 degrees C Tc = (5/9)*(Tf-32) = (5/9) * (102-32) = (5/9)*70 = 38.8 |
| 15 degrees C = ___ F | 59 degrees F Tf = [(9/5)*Tc]+32 = [(9/5)*15] +32 = 27-32 = 59 |
| 65 degrees C = ___ F | 149 degrees F Tf = [(9/5)*Tc]+32 = [(9/5)*65] + 32 = 117+32=149 |
| 34 degrees C = ____ F | 93.2 degrees F Tf = [(9/5)*Tc]+32 = [(9/5)*34]+32=61.2+32=93.2 |
| 5% solution contains how many g per ml? | 5g/100ml = 0.05g/1ml |
| 7% solution contains how many mg per ml? | 7g/100ml = 7000mg/100ml = 70mg/1ml |
| 12% solution contains how many mg per ml? | 12g/100ml = 12000mg/100ml = 120mg/ml |
| What % solution is 8g in 100 ml? | 8% |
| What % solution is 60mg in 100ml? | 60mg/100ml = 0.06g/100ml = 0.06% |
| what is the $ solution of 150mg in 1 L? | 150mg/1L = 150mg/ 1000ml = 0.150g/1000ml =0.015g/100ml = 0.015 % |
| what is the abbreviation for milliequivalent? | meq |
| if 1 ml contains 2meq, how many meq will be in 5ml? | 10 because 5ml x 2meq/ml = 10meq |
| If potassium is formulated as 2meq/ml, how many ml will you need to result in 20meq? | 10ml becuase 20meq divided by 2meq/ml = 10 |
| To make a 250ml of 7% dextrose solution, how many ml of 50% dextrose do you need? | 7 * 250 = 50 X 1750/50=x x=35ml of 50% dextrose |
| If you add 25ml of 50% dextrose to 1000ml, what is the resulting % concentration of the solution? | 50 * 25 = x * 1000 1250= x*1000 1.25 = x = 1.25% concentration of dextrose |
Created by:
DrCariWise
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