You have one mole of a diatomic gas.

Which statement is true?

You have one-third the number of particles that are in 12 grams of carbon-12.

You have the same number of particles that are in 12 grams of carbon-12.

You have six times the number of particles that are in 12 grams of carbon-12.

You have three times the number of particles as in 12 grams of carbon-12.

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.

→

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.