Asample ofpolystyrene, which has a specific heat capacity of 1.880 j/g k, is put into a calorimeter that contains 100.0 g of water. the polystyrene sample starts off at 89.8 c and the temperature of water starts off at 19.0°c. when the temperature of the water stops changing it is 33.5°c. the pressure remains constant at 1.0 atm. calculate the mass of the polystyrene sample. be sure your answer is rounded to significant digits.

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.