What is the molecularity of an elementary step, given its rate law is as follows: rate = k[a]2[b]?

1 answer:

3 0

Chemical reaction: 2A + B → unkwown product.
Molecularity is the number of molecules that come together to react in an elementary (single-step) reaction and Molecularity in chemistry is the number of molecules that come together to react in an elementary (single-step) reaction and is equal to the sum of stoichiometric coefficients of reactants in this elementary reaction.
This reaction is termolecular (or trimolecular) because three molecules react (two A and one B).

You might be interested in

Select the correct answer.

GREYUIT [131]

Answer:HNO3 + NaOH → H2O + NaNO3

Explanation:

8 0

4 years ago

Determine the mass in grams of 3.75 x 10^21 atoms of zinc. (the mass of one mole of zinc is 65.39 g)

Nastasia [14]

Answer: The mass in $3.75 \times 10^{21}$ atoms of zinc is 0.405 g.

Explanation:

Given: Atoms of zinc = $3.75 \times 10^{21}$

It is known that 1 mole of every substance contains $6.022 \times 10^{23}$ atoms. So, the number of moles in given number of atoms is as follows.

$Moles = \frac{3.75 \times 10^{21}}{6.022 \times 10^{23}}\\= 0.622 \times 10^{-2}\\= 0.0062 mol$

As moles is the mass of a substance divided by its molar mass. So, mass of zinc (molar mass = 65.39 g/mol) is calculated as follows.

$Moles = \frac{mass}{molar mass}\\0.0062 mol = \frac{mass}{65.39 g}\\mass = 0.405 g$

Thus, we can conclude that the mass in $3.75 \times 10^{21}$ atoms of zinc is 0.405 g.

6 0

3 years ago

Large air masses moving across and area are called _____?

faltersainse [42]

Fronts. This includes cold fronts and warm fronts. Hoped this helped!

6 0

3 years ago

Read 2 more answers

Give an example of how today’s forensic chemists can help solve crimes

goldenfox [79]

they can find dna at the crime scene wich will lead them to the guilty party

4 0

3 years ago

Science Grade 8

FinnZ [79.3K]

Sound waves are produced by air flow coming from our lungs passing through our throat, more specifically our larynx and moving with two folds of tissue called vocal chords. The sound is made by the vibration of vocal chords, so the more stretched the chords are over the larynx, their frequency of vibration is higher, therefore producing higher-pitched sounds.

4 0

3 years ago