The rate of a reaction is proportional to the surface area of a catalyst. Given the volume (V) of a sphere, we can find its surface area (A) using the following expression.

$A=\pi ^{1/3} (6V)^{2/3}$

The area of the 10.0 cm³-sphere is:

$A=\pi ^{1/3} (6.10.0)^{2/3}=22.4cm^{2}$

The area of each 1.25 cm³-sphere is:

$A=\pi ^{1/3} (6. 1.25)^{2/3}=5.61cm^{2}$

The total area of the 8 1.25cm³-spheres is 8 × 5.61 cm² = 44.9 cm²

The ratio of 8 1.25cm³-sphere to 10.0 cm³-sphere is 44.9 cm²/22.4 cm² = 2.00

Since the surface area is doubled, the second run will be faster.

6 0

3 years ago

It is found that doubling the concentration of a quadruples the reaction rate and tripling the concentration of b triples the re

MatroZZZ [7]

Reactant A must be second order and reactant B first order. Overall = add them so 3rd order.

4 0

3 years ago

Mass does not change during a chemical change. is the same true for physical change?

Mashutka [201]

Answer:

Mass states that mass is neither created nor destroyed in a chemical reaction or a physical transformation

Explanation:

4 0

3 years ago

What is the main difference of the food pyramid and My Plate

choli [55]

More vegetables, more fruits, easier to use.

7 0

3 years ago