Asample of hydrogen gas has an initial pressure of 2.86 atm and an initial volume of 8472 ml if the volume of the
were decreased to 365.8 ml, what would the new pressure be? gas law used:

Gas law : Boyle's law

New pressure: 66.24 atm

Concept tested: Gas laws (Boyle's law)

We are given,

We need to determine the new pressure, P₂

P₂ = P₁V₁ ÷ V₂

   = (2.86 atm × 8472 mL) ÷ 365.8 mL

   = 66.24 atm

Therefore, the new pressure is 66.24 atm

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.