Estimate the change in enthalpy and entropy when liquid ammonia at 270 K is compressed from its saturation pressure of 381 kPa to 1200 kPa. For saturated liquid ammonia at 270 K, Vl = 1.551 × 10−3 m3·kg−1, and β = 2.095 × 10−3 K−1.

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

Can someone me with 3 and 4 plz. this is for masteries test.

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %