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A protein subunit from an enzyme is part of a research study and needs to be characterized. A total of 0.160g of this subunit was dissolved in enough water to produce 2.00 mL of solution. At 28 ? C the osmotic pressure produced by the solution was 0.138 atm . What is the molar mass of the protein(g/mol)?
If, in a certain experiment, over a specific time period, 0.0039 mol PH3 is consumed in a 1.8-L container each second of reaction, what are the rates of production of P4 and H2 in this experiment?
Describe the basic steps involved in gravimetric analysis. How does this procedure help us determine the identity of a compound or the purity of a compound if its formula is known.
Physiological saline solutions used for intravenous injections have a concentration of 0.90% NaCl by weight
what is the maximum number of grams of [Co(NH3)6]Cl3 that can be produced?
How many moles of S8 are needed to make 0.600 moles of SF4? S8 + 8 Cl2 = 8 SCl2 ; 3 SCl2 + 4 NaF = SF4 + S2Cl2 + 4 NaCl
How many grams of a stock solution that is 87.5 percent H2SO4 by mass would be needed to make 275 grams of a 55.0 percent by mass solution.
How many grams of F2 are needed to produce 158 g of PF3 if the reaction has a 79.8% yield?
If 20.0 g acetylene is allowed to completely react with oxygen , how many g of O2 are reacted? 2C2H2 + 5O2→ 4CO2 + 2H2O
which the excess HClO4 was back-titrated with 8.72-mL of 0.3045 M NaOH using bromocresol green as an indicator. What is the concentration of the perchloric acid solution?
write a molecular equation total ionic equation and net ionic equation for this precipitation reaction between the given ionic compounds Ba(no3)2 and NiSO4.
A mixture of 0.152 moles of C is reacted with 0.117 moles of O2 in a sealed, 10.0L vessal at 500K, producing a mixture of Co and CO2. The total pressure is 0.6879 atm. What is the partial pressure of CO?
How many moles of iron atoms are in 2.28 mol of Fe2O3?
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