A sample of gas in a balloon has a volume of 750 ml at a pressure of 645mm Hg and a temperature of 25.0°C. The balloon is heated to a temperature of 35.0°C and the volume expands to 1.00L. What is the pressure under the new conditions? (enter
answer with no unit)

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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i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.