18. The Delta S for the reaction shown at 298 K is 0.003 00 kJ (mol•K). Calculate the Delta G for this reaction, and determine whether it will occur spontaneously
at 298 K.
C(s) + O2(g)——>
CO2(g)+ 393.51 kJ

answer: i would say b.

explanation:

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.