Complete combustion of a 0.70mol sample of a hydrocarbon gives 3.50mol of co2 and 2.80mol of h2o the molecular formula for the hydrocarbon is

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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answeridentity;