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Is this statement true?
"If the label of a disinfectant says to use a dilution of 1 standard US measuring cup per gallon of water, using 2 cups/gallon will be twice as effective"
the statement is false. Nominal dilution of a disinfectant kills 90-99% of all microbes (depending on disinfectant). If you make a smaller dilution of disinfectant, it will kill more microbes,...
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70-75% ethanol is the most common disinfectant/sterilizing-sanitizing agent used in a microbiology laboratory. Explain why 70-75% ethanol is more effective than 95-99% ethanol.
70-75 % isopropyl alcohol is by far better at killing bacteria and viruses than 95-99 % isopropyl alcohol. As a disinfectant, the higher the concentration of alcohol, the less effective it is...
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How much money will it cost you to ride 110.0 miles if your motorcycle gets 44.00 miles per gallon and gas costs $2.759/gallon?
ans= $6.895 =$6.90
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Dilution process is accompanied with releasing or absorbing heat true or false
True: The first two steps absorb energy, which is then released in the final step. The total heat of solution may be endothermic or exothermic, depending on the relative amounts...
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why is the beaker not suitable to be used in preparing a standard solution by dilution method?
Assuming the beaker is the vessel in which the reaction takes place, it must be clean. If it is rinsed with distilled water, that’s fine. If it is rinsed with...
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How much money will it cost to drive a school bus 75.00 miles if it gets 6.500 miles per gallon and gas costs $2.459/gallon
The required amount of gas 75.00 / 6.500 = 11.53 gallonsThe required costs 11.53 x $2.459 = $28.37
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Compute for the molality of her disinfectant if she dissolved 5Tbsp. of NaClO (sodium hypochlorite) in 3.8 liters of H2O (water).
1Tbsp=12.7817 gramm5 Tbsp=63.9085 grammM(NaClO)=23+35.5+16=74.5 gramm/moln(NaClO)=63.9085 gramm/74.5 (gramm/mol)=0.8578 molc(NaClO)=0.8578 mol/3.8 l=0.2257 mol/l
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What is the molar concentration of active disinfectant if she dissolve 5 tablespoon of nacl for the sodium hypochlorite in 3.8 m of water
1 tablespoon = 15g= 15×5= 75gMolar mass of NaCl= 58.4475/58.44= 1.28molMolar mass of H2O= 18.023.8×18.02=68.48ml1.28/0.06848= 18.692
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*If equivalent conductance at infinite dilution of NaCl, HCl and CH3COONa are 126.45, 426.16 and 91.0 respectively, find the equivalent conductance of acetic acid at infinite dilution.*
λ CH3COOH = λCH3COONa + λHCl - λNaCl = 91 + 426.16 – 126.45 = 390.71
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How much money will it cost you to drive 100 miles if your car gets 25.70 miles per gallon and gas costs $3.309/gallon?
If the car gets 25.70 miles per gallon, it will use 100 miles / 25.70 miles/gallon = 3.89 gallons of gas to drive 100 miles.If one gallon costs $3.309, it...
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