With an EM wave, the higher the frequency is, the higher the energy but also the lower the wavelength. If a wave has a low frequency, it will have a high wavelength but also low energy. An example is a radio wave.
A high frequency, high energy (but low wavelength) wave like gamma or UV are also ionising which means they have enough energy to knock electrons off atoms.
Answer:
0.095 moles of O₂ are left over.
Explanation:
First of all, state the balanced reaction:
2NO + O₂ → 2NO₂
We determine moles of each reactant:
20.2 g . 1mol / 30g = 0.673 moles of NO
13.8g . 1mol / 32g = 0.431 moles of oxygen
Oxygen is the excess reactant. Let's see.
For 2 moles of NO I need 1 mol of O₂
Then, for 0.673 moles of NO I may use (0.673 .1) /2 = 0.336 moles
I have 0.431 moles of O₂ and I only need 0.336 mol. According to reaction, stoichiometry is 2:1.
In conclussion, the moles of excess reactant that will be left over:
0.431 - 0.336 = 0.095 moles
It's gonna be Rb. The rule is that the lower it is and the closer it is to the left, the more reactive it will be.
Why left? Because their valence decreases, and the atom has a stronger desire to bond with other atoms. Alkali metals are considered the MOST reactive group in the periodic table, followed by AEM (alkaline earth metals). Noble gases are the least reactive because their valence's are full and they don't need 2 bond with anyone else. That's why artifacts are placed in noble-gas rich environments; so that they don't ruin and reactions don't occur (the declaration of independence is sealed in a helium container for that purpose)
Why down? Because there are more electron shells, resulting in a greater distance between the valence electrons and the nucleus. This reduces the attraction.
good luckkk daddyyyyyyy
Answer:
When electrons are removed from an object, it becomes positively charged
Answer:
Atoms with 5 or more valence electrons gain electrons forming a negative ion, or anion. why are outermost electrons only ones included in orbital filling diagram? they are the only ones involved in chemical reactions and bonding. ... 2s orbital is farther from the nucleus meaning it has more energy.
Explanation:
