Okay so i think to calculate volume change you use the ideal gas law . this is pressure x volume = amount of substance x ideal gas constant x temperature. i honestly don’t know where to go from there but i hope this helped a bit :(
Answer:
the ice starts melting and turns into water
You can find the volume of an irregular object by immersing it in water in a beaker or other container with volume markings, and by seeing how much the level goes up.
To solve this problem, let us all convert the mass of
each element into number of moles using the formula:
moles = mass / molar mass
Where,
molar mass K = 39.10 g / mol
<span>molar mass Cl = 35.45 g / mol</span>
molar mass O = 16 g / mol
<span>and mass O = 13 g – 4.15 g
– 3.76 g = 5.09 g</span>
moles K = 4.15
g / (39.10 g / mol) = 0.106 mol
<span>moles Cl = 3.76 g / (35.45 g / mol) = 0.106 mol</span>
moles O = 5.09 g / (16 g /
mol) = 0.318 mol
The ratio becomes:
0.106 K: 0.106 Cl: 0.318 O
We divide all numbers with
the smallest number, in this case 0.106. This becomes:
K: Cl: 3O
Therefore the empirical formula
is:
![KClO_{3}](https://tex.z-dn.net/?f=%20KClO_%7B3%7D%20)
Answer:
After 190 s the concentration of X will be 0.0396 M
Explanation:
![ln\frac{A_t}{A_0} = -kt](https://tex.z-dn.net/?f=ln%5Cfrac%7BA_t%7D%7BA_0%7D%20%3D%20-kt)
Where;
Xt is the concentration of X at a time t
X₀ is the initial concentration of X
k is rate constant = 1.7×10⁻² s⁻¹
t is time = 190s
ln(Xt/X₀) = -( 1.7×10⁻²)t
ln(Xt/1.0) = -( 1.7×10⁻²)190
ln(Xt/1.0) = -3.23
![\frac{X_t}{1} = e^{-3.23}](https://tex.z-dn.net/?f=%5Cfrac%7BX_t%7D%7B1%7D%20%3D%20e%5E%7B-3.23%7D)
Xt = 0.0396 M
Therefore, after 190 s the concentration of X will be 0.0396 M