HELP please, due soon, ill mark brainliest. 1. a plastic bottle is filled with 500.0 mL of air at 30.0 degrees celsius and a pressure of 1.3 atm. A student then proceeds to jump on the bottle causing the pressure to increase to 4.5 atm and the cap goes shooting off.

a) what caused the lid to go shooting off? use a particle level explanation. you must use the words collisions and frequency.
b) determine the volume of the bottle right at the point when the cap shoots off assuming the temperature remains the same.

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?