What is the difference between atom and it’s ion ? A- number of protons

B-number of neutrons

C- number of quarks

D- number of electrons

PLEASE help ASAP with explation just so I know you know not cappin pleasee

The boiling point of liquids is very high what does it indicate

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?