2.8 * 10 ^ 24 / 6.022 * 10 ^ 23 = 4.650 moles.
The answer is; C
It begins with electrical energy when the microwave is connected to a power outlet. The electrical energy changes to electromagnetic energy as the microwave releases microwave radiation that hits the food in the microwave. When the microwave’s electromagnetic radiation hits the food, the water molecules in the food get excited and the food heats up turning to thermal energy.
<span>first, we have to know what is electrolyte:
The electrolyte is a substance which breaks into cations + and anions - when dissolved in water.
now, to be able to classify electrolytes we have to look for:
1) If this chemical formula is one of the 7 strong acids (which are HCl, HBr, HI,
HNO3, HClO3, HClO4 and H2SO4) if the chemical formula one of them so,
this is a strong electrolyte.
2) when the chemical formula starts with H atom It's probably a weak
electrolyte. so here HBr is a strong electrolyte as it is one of the 7 strong
acids.
and HF is a weak electrolyte as it is a weak acid.
and Zn(NO3)2 is a strong electrolyte as it is soluble in water and form ions</span>
A. the nucleus carries a positive charge, and the electron cloud carries a negatuve charge. since neutrons carry no charge, the nucleus composed of neutrons and protons carry a positive charge.