9. Ms. Ramos is moving the chemistry boxes around the prep room. One of the boxes weighs 50 kg and she exerts a force of 250N as she pushes it
down and across the floor at an angle of 45°. The coefficient of friction
between the box and the floor is 0.7.

a. What is the normal force acting on the box?

b. what is the net force on the box in the horizontal direction

Show work and be sure to label all variables and equations

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .