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2 years ago

If the coefficients are Molar ratios, in this

Chemistry

1 answer:

MaRussiya [10]2 years ago

7 0

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In the equation, coefficients are molar ratios, so we can conclude that :

For the given reaction to proceed smoothly, we need 3 moles of H2 molecule ~

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Is a burning log an exothermic or endothermic event if the log is the system?

denpristay [2]

It would be endothermic because the log is in the system.

6 0

2 years ago

The rate of disappearance of HBr in the gas phase reaction2HBr(g) → H2(g) + Br2(g)is 0.301 M s-1 at 150°C. The rate of appearanc

jok3333 [9.3K]

Answer: 0.151

Explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

$2HBr(g)\rightarrow H_2(g)+Br_2(g$

The rate in terms of reactants is given as negative as the concentration of reactants is decreasing with time whereas the rate in terms of products is given as positive as the concentration of products is increasing with time.

$Rate=-\frac{1d[HBr]}{2dt}=+\frac{1d[H_2]}{2dt}=+\frac{1d[Br_2]}{dt}$

Given: $-\frac{d[HBr]}{dt}]=0.301$

Putting in the values we get:

$\frac{0.301}{2}=+\frac{1d[Br_2]}{dt}$

$+\frac{1d[Br_2]}{dt}=0.151$

Thus the rate of appearance of $Br_2$ is 0.151

8 0

3 years ago

An iron fence is left on painted and it reacts with the oxygen in the air form forming rust. the formation of the rest is an oxi

Alenkinab [10]

An iron fence is left on painted and it reacts with the oxygen in the air form forming rust. the formation of the rest is an oxidation-reduction reaction but it is also an example of a double-displacement reaction.

cooking requires continuous addition of energy to the chemical reactions the are taking place the chemical reaction involved in cooking can be described as a chemical change.

measuring how quickly a reactanat disappears in one way to measure the rate of the reaction

3 0

3 years ago

Read 2 more answers

108/49 In ? 108/48 Cd + ? In the equation above, what particle or type of radiation needs to be included on the right hand side

Oksanka [162]

Answer: b) positron

Explanation:

The antiparticle or the antimatter counterpart of the electron is called positron.

The positron has an electric charge of +1 e and same mass as an electron. When a positron collides with an electron, annihilation takes place.

Below is an attachnent that further explains this

7 0

3 years ago

Please help!! List 2 advantages and disadvantages of each chart below worth 40 points!

barxatty [35]

Answer:

Hydro power

Advantage- Clean source

Safe

Disadvantage- Expensive

Environmental consequences

Coal

Advantage- Easy to find

Affordable

Disadvantage- Non renewable

Pollution

Explanation:

I helped you out with two of them

7 0

3 years ago