HELPP PLEASE Isotopes have different number of *

Protons
Electrons
Neutrons
Protons and Neutrons

1. if you have a gas at 127 degrees c, what is it's absolute temperature (kelvin)? a. 200kb. 300kc. 400kd. 500k2. if you had a gas whose absolute temperature measured 45 k, what is that temperature in celsius? a. -228 cb. -300 cc. 125 cd. 112 c

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2