PLEASE help, ill mark brainliest. an inflated balloon is left outside overnight. initially, it has a volume of 2.89L when the temperature 32.4 degree celsius and the pressure is 101.87 kPa. the temperature falls to 22.3 degree celsius and the pressure remains constant. what is the volume now? a) what temperature scale must be used?
b) calculate the new volume

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Covalent compounds: mastery test select the correct answer what is formed when atoms join together with a covalent bond? a. an ion b. a molecule c. a neutral atom d. a noble gas