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Morgarella [4.7K]
3 years ago
12

What are bacteria? Are they good or bad?

Chemistry
2 answers:
4vir4ik [10]3 years ago
6 0

Answer:

Hello There!!

Explanation:

Some are good and help us to protect from diseases some are bad from which we get infections and diseases.

hope this helps,have a great day!!

~Pinky~

Gnom [1K]3 years ago
5 0

Answer:

Bacteria are a type of biological cell. They constitute a large domain of prokaryotic microorganisms

some are good some are bad

Explanation:

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When heating liquid materials in laboratory glassware, a student should always
Lelechka [254]

Answer:

be careful to not hurt yourself

5 0
3 years ago
Read 2 more answers
Consider the following mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution. H+ + H2O2 ? H3
Margarita [4]

<u>Answer:</u> The rate law for the reaction is \text{Rate}=k'[H+][H_2O_2][Br^-]

<u>Explanation:</u>

Rate law is the expression which is used to express the rate of the reaction in terms of the molar concentration of reactants where each term is raised to the power their stoichiometric coefficient respectively from a balanced chemical equation.

In a mechanism of the reaction, the slow step in the mechanism determines the rate of the reaction.

The chemical equation for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution follows:

2H^++2Br^-+H_2O_2\rightarrow Br_2+2H_2O

The intermediate reaction of the mechanism follows:

<u>Step 1:</u>  H^++H_2O_2\rightleftharpoons H_3O_2^+;\text{ (fast)}

<u>Step 2:</u>  H_3O_2^++Br^-\rightarrow HOBr+H_2O;\text{(slow)}

<u>Step 3:</u>  HOBr+H^++Br^-\rightarrow Br_2+H_2O;\text{(fast)}

As, step 2 is the slow step. It is the rate determining step

Rate law for the reaction follows:

\text{Rate}=k[H_3O_2^+][Br^-]          ......(1)

As, [H_3O_2^+] is not appearing as a reactant in the overall reaction. So, we apply steady state approximation in it.

Applying steady state approximation for [H_3O_2^+] from step 1, we get:

K=\frac{[H_3O_2^+]}{[H^+][H_2O_2]}  

[H_3O_2^+]=K[H^+][H_2O_2]

Putting the value of [H_3O_2^+] in equation 1, we get:

\text{Rate}=k.K[H^+][H_2O_2][Br^-]\\\\\text{Rate}=k'[H+][H_2O_2][Br^-]

Hence, the rate law for the reaction is \text{Rate}=k'[H+][H_2O_2][Br^-]

4 0
3 years ago
Peut-on être exact sans être précis?
Evgesh-ka [11]

Answer:

I think you can.

8 0
3 years ago
What is the difference between mass number and average atomic mass?
myrzilka [38]

Answer:

the answer is c. I think

Explanation:

4 0
3 years ago
A liter of milk has a [H] of about 2.51 x 10-7. (You may prefer to think of the hydronium ion concentration, [H3O+], as 2.51 x 1
riadik2000 [5.3K]

Answer:

12-6

Explanation:

7 0
2 years ago
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