4.Două corpuri punctiforme sunt electrizare cu sarcinile Q 1 =3,2 *10 -9 C, respectiv Q 2 = -1,6 * 10 -10 C. a)Câți electroni sunt pe fiecare corp?

b) care este sarcina electrică de pe fiecare corp după contactul dintre cele două corpuri?

Va rog frumos, dau coroana

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air