I believe the answer is A
The temperature of the gas sample is 813 K.
<u>Explanation:</u>
We have to use the ideal gas equation to find the temperature of the gas sample.
The ideal gas equation is PV = nRT
Pressure, P = 429 mm Hg = 0.56 atm
Volume, V = 560 mL = 0.56 L
R = gas constant = 0.08205 L atm mol⁻¹K⁻¹
Mass = 0.211 g
Molar mass of carbon di oxide = 44.01 g / mol
Moles, n = 
= 0.0047 mol
Now, we have to plugin the above values in the above equation, we will get the temperature as,

T = 
= 813 K
So the temperature of the gas sample is 813 K.
The answer is the last option.
<span>
It is the most common value in the set.</span>
Answer:
Groups
Explanation:
Groups(row going up and down) All have the same amount of valence electrons) Ex: First group the alkali metals all have 1 valence electron and are all very highly reactive.
The only ones that this rule does not work for is the smaller column in the middle called transitional metals and the amount of valence electron that each one has differs