I don't think the answer is in one of the options- unless I am reading it wrong and there is a 'V' option.
The volume (V) of gas increases when the pressure of the gas decreases assuming all the other variables are held constant.
I hope this helps!
Answer:
Potassium nitrate is a chemical compound with the chemical formula KNO3. It is an ionic salt of potassium ions K+ and nitrate ions NO3−, and is therefore an alkali metal nitrate. It occurs in nature as a mineral, niter (or nitre in the UK). It is a source of nitrogen, and nitrogen was named after niter.
Explanation:
Because the 4s orbital is at a lower energy level.
The 4s orbital has a lower energy because it is more <em>penetrating</em> than a 3d orbital. A 4s electron can get closer the nucleus than a 3d electron, so it has a lower potential energy.
The other options are incorrect because they contradict the correct one.
Answer:
a. Magnesium (s) is oxidized to Mg 0
Explanation:
Hope it helps.
Answer:
We will use the combined gas equation.
The final volume V₂=931.74 mL
Explanation:
The combined gas equation shows the interrelationship between the volume, the pressure and the absolute temperature of a fixed mass of an ideal gas,
P₁V₁/T₁=P₂V₂/T₂
Because we are looking for the volume after the initial conditions havre been varied, we will call this volume, volume 2 ( V₂)
Let us make it the subject of the equation.
V₂=(P₁V₁T₂)T₁P₂
P₁=1.50 ATM
P₂=1.20 ATM
V₁=800 mL
V₂=?
T₁=(20+273)K=293 K
T₂=0+273 K=273 K
V₂=(1.50 ×800×273)/(293×1.2)
V₂=931.74 mL
