Choose ALL the compounds that bond covalently: dinitrogen pentoxide
A sulfur hexafluoride
E sodium oxide
O manganese (IV) selenide
O triphosphorous heptachloride
HD calcium nitride
Hurrr please

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

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

thats how its supposed to be