Absolute zero that means cooling - 0 degree
Answer:
r = 3.61x
M/s
Explanation:
The rate of disappearance (r) is given by the multiplication of the concentrations of the reagents, each one raised of the coefficient of the reaction.
r = k.![[S2O2^{-8} ]^{x} x [I^{-} ]^{y}](https://tex.z-dn.net/?f=%5BS2O2%5E%7B-8%7D%20%5D%5E%7Bx%7D%20x%20%5BI%5E%7B-%7D%20%5D%5E%7By%7D)
K is the constant of the reaction, and doesn't depends on the concentrations. First, let's find the coefficients x and y. Let's use the first and the second experiments, and lets divide 1º by 2º :
![\frac{r1}{r2} = \frac{0.018^{x} x0.036^{y} }{0.027^xx0.036^y}](https://tex.z-dn.net/?f=%5Cfrac%7Br1%7D%7Br2%7D%20%3D%20%5Cfrac%7B0.018%5E%7Bx%7D%20x0.036%5E%7By%7D%20%7D%7B0.027%5Exx0.036%5Ey%7D)
![\frac{2.6x10^{-6}}{3.9x10^{-6}} = (\frac{0.018}{0.027})^xx(\frac{0.036}{0.036})^y](https://tex.z-dn.net/?f=%5Cfrac%7B2.6x10%5E%7B-6%7D%7D%7B3.9x10%5E%7B-6%7D%7D%20%3D%20%28%5Cfrac%7B0.018%7D%7B0.027%7D%29%5Exx%28%5Cfrac%7B0.036%7D%7B0.036%7D%29%5Ey)
![0.67 = 0.67^x](https://tex.z-dn.net/?f=0.67%20%3D%200.67%5Ex)
x = 1
Now, to find the coefficient y let's do the same for the experiments 1 and 3:
![\frac{r1}{r3} = \frac{0.018x0.036^y}{0.036x0.054^y}](https://tex.z-dn.net/?f=%5Cfrac%7Br1%7D%7Br3%7D%20%3D%20%5Cfrac%7B0.018x0.036%5Ey%7D%7B0.036x0.054%5Ey%7D)
![\frac{2.6x10^{-6}}{7.8x10^{-6}} = (\frac{0.018}{0.036})x(\frac{0.036}{0.054})^y](https://tex.z-dn.net/?f=%5Cfrac%7B2.6x10%5E%7B-6%7D%7D%7B7.8x10%5E%7B-6%7D%7D%20%3D%20%28%5Cfrac%7B0.018%7D%7B0.036%7D%29x%28%5Cfrac%7B0.036%7D%7B0.054%7D%29%5Ey)
![0.33 = 0.5x 0.67^y](https://tex.z-dn.net/?f=0.33%20%3D%200.5x%200.67%5Ey)
![0.67 = 0.67^y](https://tex.z-dn.net/?f=0.67%20%3D%200.67%5Ey)
y = 1
Now, we need to calculate the constant k in whatever experiment. Using the first :
![2.6x10^{-6} = kx0.018x0.036](https://tex.z-dn.net/?f=2.6x10%5E%7B-6%7D%20%3D%20kx0.018x0.036)
![kx6.48x10^{-4} = 2.6x10^{-6}](https://tex.z-dn.net/?f=kx6.48x10%5E%7B-4%7D%20%3D%202.6x10%5E%7B-6%7D)
k = 4.01x10^{-3} M^{-1}s^{-1}[/tex]
Using the data given,
r = ![4.01x10^{-3}x1.8x10^{-2}x5.0x10^{-2}](https://tex.z-dn.net/?f=4.01x10%5E%7B-3%7Dx1.8x10%5E%7B-2%7Dx5.0x10%5E%7B-2%7D)
r = 3.61x
M/s
Answer:
Density = mass / volume,
therefore volume = mass / density. Note that 1 mL = 1 cubic centimeter.
Explanation:
Volume = 15.1g / 3.52g/mL = 4.3mL = 4.3 cubic centimeters.
then a diamond has a density of 3.52 g/mL.
Answer: universal Solvent
Explanation: water can dissolve many substances than any other solvent. Because of this, water is sometimes called a UNIVERSAL SOLVENT.