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Find the mass/volume percentage of ethyl alcohol in a solution that contains 175 g of ethyl alcohol in 470 g of solution
100 x 175/470 = 37,2340426 %.
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If 126.4 g of NaOH is 97.7 g of AL are made to react. A)how many moles of NaAlo2 os prpdiced if 126.4 g of Naoh reacts comoletely
Mole= mass/molar mass
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Prepare a solution of 1M iodine in 250 ml of water, molar mass 126.2g/mol
v(H2O)=250ml/22400ml/mol==0.01molm=0.01mol*126.2g/mol=1.41g
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The molality of a solution of ethyl alcohol, C<sub>2</sub>H<sub>3</sub>OH, in water is 1.54 mol/Kg. How many grams of alcohol were dissolved?
Grams of Alcohol =177.37g
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0.3 gm of an organic compound was Kjeldahlised and the evolved NH3 required 30ml M/10 H2SO4 for complete neutralisation % of nitrogen is?
(1)28
(2)36
(3)21
(4)42
(1)28
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How many kilograms are equal to 3.3 scruples? (In apothecaries’ measures: 1 scruple = 20 grains, 1 ounce = 480 grains, 1 gram = 0.03215 ounce)
1 scruple = 20 grains1 grain = 64.79891 milligrams = 0.065 g = 0.000065 kg3.3 scruples is equal to: 3.3 x 20 x 0.000065 = 0.0043 kg
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120mL of water is added to 30mL of the 40% ethanol solution. What is the dilution factor? And, what is the concentration of the diluted solution?
1) Dilution factor refers to the ratio of the volume of the initial (concentrated) solution to the volume of the final (dilute) solution1, that is, the ratio of V1 to...
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a water solution contains 10% ethyl alcohol by mass and has a density of 0.983 g/cm3 . what is the mass of ethyl alcohol is present in 7.5 L of this solution
7.5L = 7.5*1000 mL mass of 7.5 L solution: 7.5*1000 mL * 0.983 g/cm 3 = 7.3725*1000 g mass of ethyl alcohol: 7.3725*1000 g * 0.1 = 737.25 g Answer:...
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How would you prepare a 25% by mass water in ethyl alcohol using 100 ml of ethyl alcohol?
Find the mass of 100 ml of ethyl alcohol (density = 0.789 g/ml) : m = 100 × 0.789 = 78.9 (g) The task is to prepare 25% by mass...
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How many grams of ethyl alcohol are in 1 fluid ounce (=30ml) bourbon if the concentration of ethyl alcohol is 35.6% (w/v)?
As 100 ml of bourbon contain 35.6 g of ethanol, 30 ml of bourbon contain:m (ethanol) = (30 ml × 35.6 g) / 100 ml = 10.68 gAnswer: 10.68 g...
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