)what are the standard ways to make a solution of known concentration? (select all that apply.) a. dissolve a weighed amount (known mass) of stock solution into a known volume of liquid. b. dissolve a known volume of solid into a known mass of liquid. c. dilute a known volume of stock solution into a known volume of liquid. d. dissolve a weighed amount (known mass) of solid into a known volume of liquid.

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.

→

ljjjljlj kjlk,ljym jlyu; jm; l mumytj

they are made of gases.

they have a spherical shape.

they make energy through fusion.

answermeridional ;