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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 a bottle of beer is 5.00 % alcohol by volume and a bottle of beer contains 330 mL, calculate the total volume of alcohol in a case of 24 bottles of beer.
396mL of alcohol.
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assume a bottle of wine consist of an 11% solution (by weight) of ethanol in water. if the bottle of wine is chilled to -20 degree celsius will the solution begin to freeze ?
11/100×-20=-2.2=-20+-2.2=-22.2°C
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At STP, 50 mL of isopropanol (C3H7OH, density: 0.786 g/mL) is combusted in the presence of 2 L O2. Which starting material remains after the reaction and what is the remaining volume?
C3H7OH + 5O2=3CO2+4H2O m=50 ml*0.786 g/ml=39.3 g n=m/Mr=39.3/60=0.655 mol n(O2)=2/22.4=0.0893 mol oxygen react completely only 0.0893/5=0.0179 isopropanol react and it remains after reaction =0.655-0.0179=0.63714 mol V of CO2 =(0.0893/5 *3)=0.0536*22.4=1.20...
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1. An experiment requires a solution that is 80% methyl alcohol by volume. What volume of methyl alcohol should be added to 200 mL of water to make this solution?
Solution:The percentage of CH3OH by volume is defined as:ϕCH3OH = [VCH3OH / (VCH3OH + VH2O)] × 100%Hence,ϕCH3OH / 100% = VCH3OH / (VCH3OH + VH2O)80% / 100% = VCH3OH /...
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a bottle of hydrogen peroxide also known as agua oxigenada is labeled 3% (v/v). How many ml of agua oxigenada are in a 400ml bottle of this solution?
Solution:Solute = agua oxigenada(v/v)% = 3%Volume of agua oxigenada = unknownVolume of solution = 400 mLThe equation for volume percent of a solution:(v/v)% = (Volume of solute / Volume of...
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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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A sample of rubbing alcohol solution contains ethanol, C2H5OH(l). If the sample contains 1.25x10^23 atoms of hydrogen in the ethanol, what amount in moles of ethanol is in the sample?
The amount of moles for atom\molecule\compound etc. can be calculated based on amount of atom\molecule\structural units etc. using Avogadro constant (NA=6.02x10^23) that represents 1 mole. One molecule of ethanol consists...
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The mass of a sample bottle is 27.23g. When filled with water, the bottle weighs 46.85g. The density of water is known to be 0.9976 g/mL. Calculate the capacity (volume) of the bottle.
(bоt.) = 27.23 g m( bоt. + H2O) =46.85g ρ(H2O) = 0.9976 g/ ml V(bоt.) - ? V(bоt.) = V(H2O) V(H2O) = m(H2O)/ ρ(H2O) =( m( bоt. + H2O) -...
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Isopropyl alcohol,CH3CHOHCH3, is used in rubbing alcohol mixtures. How much heat is absorbed by alcohol if 10.0grams evaporates. The heat of vaporation is 42.1 kJ/mol
n(CH3CHOHCH3) = m(CH3CHOHCH3)/m(CH3CHOHCH3) = 10.0g/60g/mol = 0.1667mol.Q = L(CH3CHOHCH3) * n(CH3CHOHCH3) = 42.1 kJ/mol * 0.1667mol = 7.02kJ.
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