Para que la ecuación CH4 + XO2 — YCO2 + ZH20 cumpla con la
ley de conservación de masa,
los valores de X, Y y Z deben ser
respectivamente:
A) 1,2,3
B) 3, 2, 1
C) 2,1,2
OD) 2, 2, 1
O E) 1, 2, 2

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

a electronegativity decreases beacuse the size of nucleus is bigger.