Please find the right answer of the following questions
Question 1- How many grams of liquid water at 40.00°C must be added to a Dewar (insulated) flask containing 100g of ice at -15.00 °C to satisfy the following condition: The final temperature is 0.00 °C; half the water freezes.
Question 2- Calculate the ΔS for the system, surroundings & universe for this transformation.
I need experts help to compute the quantity of liquid water.