Answer:
The moon's path around Earth is tilted compared to Earth's orbit around the sun. The moon can be behind Earth but still get hit by light from the sun. ... This is why we don't get a lunar eclipse every month.
Explanation:
Answer:
You could trip down and fall with your phone in your hand, however by accident you may throw your phone before hitting the ground to crack it and when you throw the phone, you could have directly thrown it at the tv and then the phone bounced off the tv caused by impact and hit the ground harshly causing the phone and tv to crack or break in the process and to add you might be also, hurt from the fall. Hope this helps :)
Answer:
I FALSE II FALSE III TRUE
Explanation:
Stament I : Because the efective nuclear charge for Mg is greater than that for Be, the first ionization energy of Mg is greater than that of Be. FALSE
The first ionization energy decreases as we go down a group because of the shielding efect electrons have on the farthest electron that is going to be ionized. That is the ionized electron is shielded from its nucleus because we are filling higher energy levels.
Statement II :The first ionization enery of O is less than that of N because in O we must pair electrons in the 2p orbital. FALSE
Again we have the shielding effect of electrons on the first electron to ionize. This effect does not have anything to do with the pairing of electrons in the 2p orbital. since as we go across a row in the periodic table we are increasing the number of electrons. The first electron to ionize thus will see less of its nucleus and therefore O will have a lower first ionization energy.
Statement III : The first ionization energy of Ar is less than that of Ne because a 3p electron in Ar is farther from the nucleus than a 2p electron in Ne. TRUE
This is another way to say the shielding effect is responsible for the first ionization energy being in Ar is less than that of Ne. The electron is shielded from a nucleus with a higher atomic number and it is farther away ( 3p vs 2p orbital)
Answer:
They all contain oxygen and they all have a charge of 1-
Explanation:
<span>1. 5.50% m/v means that the solution contains 5.50% of the volume measured in grams
so in 165mL you will have 5.5%*165 = 9.075g
2. 18.5% v/v means 18.5% of the total volume is methyl alcohol
so in 1.87L you will have 18.5%*1.87 = 0.35L of methyl alcohol.
3. This one works backwards. If 32.1 g is 6.00%, what is 100%?
100% = 32.1/0.06 = 535 mL </span>
