Answer: 1. 5
2H202 -> 2H2O + O2 ; 2 + 2 +1 = 5
1 charged atom is called a Proton
Explanation:
F = k.m1.m2/r²
m1 and m2: masses of objects
r: distance between the objects
k: a constant
It’s c I believe because it says 209 years to complete an orbit so hint yourself ?.....
The correct answer for the following questions that are presented above are these ones:
(1) b. Pressure. The <span>physical effect can change the boiling point of a substance is the pressure.
(2) </span><span>Evaporation only occurs at the surface of a liquid. TRUE.</span><span>
(3) </span>d. freezing. The change from liquid to solid, or the reverse of melting, is called freezing.
