How many protons is in this certain atom if it has a neutral charge and 16 electrons? and what atom is it?

a.
17; chlorine

b.
18; argon

c.
2; helium

d.
16; sulfur

Embryos of different species look very similar, which shows that the organisms share a ancestor.

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.

What is the temperature in kelvin of a gas if it is allowed to expand from 1.50 l to 4.50 l? the initial temperature is 10.0°c and pressure is constant throughout the change. which equation should you use? t2= v2/v1 t1 what is the final temperature? ⇒ 849 k these are the answers.