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Bromine is extracted from the sea and is exported, by mass, as a 50% calcium bromide solution. What is the mass of bromine in a 120 000 kg solution?
Five hundred liters of a gas are cooled from 20°C to 10°C while the pressure remains constant.what the new volume will be?
When a 2.00 g sample of RbBr is dissolved in a calorimeter that has a total heat capacity 0.6306 kJ*K^-1, the temperature decreases by 0.420 K. Calculate the molar heat of solution of RbBr.
Problem- One last time... You have 12 liters of a 1 M solution of sodium acetate (molecular weight 82.0 g/mol) and 15 mL of a solution of 10 N sodium hydroxide (40.0 g/mol). What is the final concentration of just the sodium ions if I dilute 10 mL..
Use the atomic radius (70 pm) and density of neon at 25 °C and 1 atm (0.90 g/mL) to calculate the average density of a neon atom.
Safrole is used as a topical antiseptic. Calculate the vapor pressure of a solution prepared by dissolving 0.75 mol of safrole in 950 g of ethanol ( molar mass = 46.07 g/mol). P°ethanol = 50.0 torr at 25°C
the leathal inhalation does of sarin for a 200 pound person has been determined to be .0015mg. determine the ld50 of
for a first-order reaction it takes 22.2s for the concentration of reactant a to drop from 1.00 to 0.333m. starting
The H2O molecules above and below the equatorial plane are more loosely bound. For convenience this ion is often written as Cu^2+(aq) Addition of NaOH to the Cu^2+ (aq) solution causes a precipitate of Cu(OH)2. write a balanced equation regarding ..
Determine how much energy will be required to heat 69.7 gal of H 2 O from 22 degree Celsius to 110 degree Celsius if it is given that 1.00 gal weighs 3.77 kg and water has a specific heat capacity =4.184 J/g C
The partial pressure of C2H6 is 0.300 atm and that of CH2F2 is 0.250 atm. What is the total pressure and what is the Mole fraction of C2H6 in the mixture
Calculate the pH of a buffer solution with .10 moles of C2H5COOH and .13 moles of C2H5COONa in 1.5L
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would the molecular mass of the polypeptide equal
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