Asample of 1.59 grams of z is dissolved into 500 grams of water which is in a styrofoam coffee cup. the temperature is monitored and is found to drop from 23.669◦c to 23.384◦c. what is ∆hsolution for substance z? assume no heat is lost/gained by the cup itself. the specific heat of water is 4.184 j/g· ◦c and the molecular weight of z is 131 g/mol. answer in units of kj/mol of z.

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

How will the system respond to a temperature increase?