Answer:
Two cinder blocks 6 centimeters apart
Explanation:
im not 100% certain but the 2 cinder blocks are more dense than the other options
sry if its wrong
The carbon will make two double bonds with the oxygen: O=C=O this way carbon will make 4 covalent bonds and oxygen will make 2 covalent bonds
Adding energy to a matter causes a physical change. Head to water becomes vapor--taking energy away also causes physical change, (water becoming ice,) when heat is the energy being removed.
Answer:
Yes, at 20 °C the tank was filled to full capacity
Explanation:
Given;
let initial pressure, P₁ = 2.37 atm
let initial volume, V₁ = 1860 L
let final pressure, P₂ = 220 bar = 217.123 atm
let final volume, V₂ = ?
Subject the air volume (1860 L ) at 2.37 atm to the tank rating (220 bar)
Ideal law is given by;
PV = nRT
At a fixed mole and gas temperature, the equation becomes;
P₁V₁ = P₂V₂
V₂ = (P₁V₁) / P₂
V₂ = (2.37 x 1860) / 217.123
V₂ = 20.3 L
After subjecting the air volume to tank rating, the volume of the air at 220 bar is 20.3 L which is greater than tank volume (18 L).
The extra 2.3 L can be assumed to be compressed gas volume due to the given (lower) temperature.
Thus, at 20 °C the tank was filled to full capacity.
Dissolving NH4Cl in H2O is an endothermic solution process. You measure how much it cools the solution by the temperature of the H2O.
<span>q = mass H2O x specific heat H2O x (Tfinal-Tinitial) </span>
<span>The q you measure is for 3.2g/53.4g or q/0.0599 mol. You want to convert that to q/1 mol. </span>
