What mass of Kl is contained in 2.7L of water if the solution is labelled 2molal?

Answer 1

Are you talking about 2.7L of 2M KI ?
The mass would be 2*2.7*166.00 = 9x10^2 (g)
where 166.00 is the molar mass of KI. I let the result to have one significant digit, since your given data 2M is of one significant digit.