An atom is determined to contain 17 protons, 18 electrons, and 18 neutrons. what are the mass number and charge of this atom or ion?
mass number: 36, charge: -1
mass number: 35, charge: +1
mass number: 35, charge: -1
mass number: 36, charge: neutral

1. calculate the approximate enthalpy of the reaction in joules. estimate that 1.0 ml of vinegar has the same thermal mass as 1.0 ml of water. iqnore the thermal mass of th sodium bicarbonate. note: it takes about 4.2 joules () to change 1.0 gram (1.0ml) of water 1.0 c

The p sub shell can hold up to 8 electrons in an atom. true or false?

How do scientists think that gravity affected the formation of our solar system?