tổng số hạt cơ bản của x là 82 , số hạt mang điện nhìu hơn số hạt mang điện tích âm là 4 . số khối của là bao nhiu

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

When the volume and number of particles of a gas are constant which of the following is also constant

Llama have 74 chromosomes how many chromosomes will they be found in their gametes explain how you know