Answer:
Number of delocalized electrons
Explanation:
Magnesium has more delocalized electrons compared to sodium and this accounts for the higher melting point.
- When magnesium atoms comes together to form a metallic bonds, they have more network of delocalized electrons.
- There is more pull for the localized electrons due to the nuclear charge on the nucleus.
- This strong intermolecular metallic bond increases the melting point of magnesium.
If you're referring to plants, your answer is the Epidermis.
Hope this helps! :)
Answer:
2.5 atm
Explanation:
P2 = 1.2 atm x 2.65 L x 345 K / 1.5 L x 298 K
Esto debería ser igual...
2.45 atm (personajes importantes)
Delivering electricity to homes through high voltage lines, reduces the power loss that is caused by Joule's heating.
We know that:
P=VI
Where, P is power, V is the voltage and I is the current.
So if we keep P constant and make then voltage up, I must goes down.
According to Joule's first law : Power of heating generated by a conductor is directly proportional to the product of its resistance and the square of the current.
Now using the equation:
Q=I²Rt
Where Q is the heat generated, I is the current , R is the resistance and t is the time.
So by reduced I, heat loss will be reduced.
Answer:
Explanation:
Here we have to use stoichiometry.
First of all, we have to calculate the mass of 100% of yield:
1.7 g ------- 98%
X -------- 100%
X = 1.73 g (approximately)
Second, we have to calculate the mass of N2 that is necessary to react to produce the mass of 1.73g of NH3. To do that, we have to use the Molar mass of N2 and NH3 and don't forget the stoichiometric relationship between them.
Molar Mass N2 : 14x2 = 28 g/mol
Molar Mass NH3: 14 + 3 = 17 g/mol
28g (N2) ------- 17x2 (NH3)
X ------------ 1.73 g
X = 1.42 g (approximately)
