Consider that you prepared a solution by dissolving 1.19 mL of an unknown organic substance (d = 0.953 g/mL) into 29.9 mL of cyclohexane (d = 0.774 g/mL). What is the mass percent of the unknown in the solution? Enter your answer in units of mass percent to three significant figures.

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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it should be all of them because it asks if you included all of those in your answer

explanation:

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.