The molecular mass of proteins is often expressed in Daltons (1Da = 0.001 kg/mol). What is the mass in g/mol of a 1.2 kDa protein?A.1.2 g/molB.0.12g/molC.120 g/molD.1200 g/mol
Question
The molecular mass of proteins is often expressed in Daltons (1Da = 0.001 kg/mol). What is the mass in g/mol of a 1.2 kDa protein?A.1.2 g/molB.0.12g/molC.120 g/molD.1200 g/mol
Solution
The molecular mass of proteins is often expressed in Daltons. 1 Dalton (Da) is equivalent to 1 g/mol. Therefore, to convert from kDa (kilodaltons) to g/mol, you simply need to multiply by 1000, because 1 kDa = 1000 Da = 1000 g/mol.
So, for a 1.2 kDa protein:
1.2 kDa * 1000 = 1200 g/mol
So, the correct answer is D. 1200 g/mol.
Similar Questions
What is the mass of 0.064 mol of KBr?Give your answer in grams and to three decimal places.(Molar mass of KBr = 119.00 g mol-1)
If 0.91 mol of a substance has a mass of 107.64 g, what is its molar mass?Give your answer in g mol-1 and to two decimal places.
What is the mass of 0.32 mol of C2H5OH?Give your answer in grams and to two decimal places.(Molar mass of C2H5OH = 46.07 g mol-1)
Problem PageQuestion114.mg of an unknown protein are dissolved in enough solvent to make 5.00mL of solution. The osmotic pressure of this solution is measured to be 0.0355atm at 25.0°C.Calculate the molar mass of the protein. Round your answer to 3 significant digits.
A solution containing an unknown solute is prepared by dissolving 25 grams of the solute in 500 grams of a solvent. The freezing point depression of the solution is found to be 4.8°C. The freezing point depression constant for the solvent is 10.2 °C kg/mol. What is the molar mass of the solute?Select one:a.80.0 g/molb.100.0 g/molc.200.0 g/mold.160.0 g/mol
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.