Answer:
First, the microwaves transmit kinetic energy to the water molecules of the food, heating the water molecules. Only, those that are not very deep into the food.
Second, the hot water molecules transmit heat by conduction to the other parts of the food.
Explanation:
1) Microwaves are a form of electromagnetic radiation. The same as any wave, they carry energy.
2) The wave length of microwaves are in the range of 0.001 mm to 1 m (shorter than radio waves and longer than infrared)
3) The microwaves of an oven, used to heat food, have a wave length aroun 12 cm.
4) The microwaves transmit energy to the water molecules in the food, by increasing the kinetic energy of water molecules. As result, the water molecules get hotter. Microwaves only penetrate about 1 cm inside the food (a potato for example) and from that the heat is transferred by conduction to the inner parts of the food.
It’s called neutralization. The alkali has neutralized the acid by taking away the H+ ions and then turning them into water.
Answer:
A
Explanation:
always more reactants than products
Answer is: y<span>es, because the ratios of grams and moles would be similiar.
For example, molecule of water:
1) M(H</span>₂O) = 2Ar(H) + Ar(O) · g/mol.
M(H₂O) = 2 + 16 · g/mol.
M(H₂O) = 18 g/mol; molar mass of water
Ratio grams and moles is 18 : 1.
2) if we write molar mass as ratio mole and grams (1 mol/18 g), ratio is of grams and moles is still the same 18 : 1.