find the enthalpy of vaporization of water in kj/mole from vapor pressures determined at the followingtwo temperatures: at 40.0 oc, vapor pressure = 55.3 torr; at 80.0 oc, vapor pressure = 355 torr

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

after 1 year: 221 deer

step-by-step explanation:

30% of 170 is 51. 170+51=221

sorry i got nothing

step-by-step explanation: