Hoàn thành PTHH sau theo chuỗi phản ứng :S->SO2->SO3->H2SO4->Mg SO4

What are the charges of the subatomic particles by choosing the answer from the drop down menu. protons have a (+1,0,or-1). (protons,neutrons,electrons) have a 0 charge. 3.) electrons have a (+1,0,-1)

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

Why is the melting of ice a physical change ?