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Elina [12.6K]
3 years ago
12

Why do you think there was a rush to mass-produce penicillin around the time of World War II?

Chemistry
2 answers:
Masja [62]3 years ago
6 0

Answer:

In 1940, Florey carried out vital experiments, showing that penicillin could protect mice against infection from deadly Streptococci.

Vladimir79 [104]3 years ago
5 0

Answer:

penicillin could protect mice against infection from deadly Streptococci.

Explanation:

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Given the reaction 2NO2 1/202 N2O5, what is the relationship between the rates of formation of N,0, and disappearance of the two
daser333 [38]

Answer:

r=\frac{r(NO_{2})}{2} =\frac{r(O_{2})}{1/2}=\frac{r(N_{2}O_{5})}{1}

Explanation:

Let us consider the reaction:

2 NO₂ + 1/2 O₂ ⇄ N₂O₅

The rate of formation of a substance is equal to the change in concentration of the product divided the change in time:

r(N_{2}O_{5})=\frac{\Delta [N_{2}O_{5}] }{\Delta t}

The rate of disappearance of a reactant is equal to to the change in concentration of the reactant divided the change in time, with a negative sign so that the rate is always a positive variable.

r(NO_{2})=-\frac{\Delta[NO_{2}] }{\Delta t}

r(O_{2})=-\frac{\Delta[O_{2}] }{\Delta t}

The rate of the reaction is equal to the rate of any substance divided its stoichiometric coefficient. In this way, we can relate these expressions:

r=\frac{r(NO_{2})}{2} =\frac{r(O_{2})}{1/2}=\frac{r(N_{2}O_{5})}{1}

8 0
3 years ago
What is the unit for mass
8090 [49]

Answer:kilograms(kg)

Explanation:

4 0
3 years ago
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Which of the following pairs of elements is most likely to form an ionic bond? A. nitrogen and oxygen B. aluminum and nitrogen C
krok68 [10]

Answer:

B

Explanation:

When nitrogen and aluminum form an ionic bond, the formula of the ionic compound is AlN. Aluminum forms a cation Al⁺³ and nitrogen forms an anion N⁻³. When each cation of Al⁺³ combines with an anion of N⁻³, AlN or aluminum nitride is formed

\Hope i could help xxxxxxxxxxxxxxxxxxx

6 0
3 years ago
A blank observation is when you describe something
lana [24]
The correct answer would be... Scientific
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3 years ago
Name the functional group in the<br> following molecule:
Anna71 [15]

Answer:

B. Aromatic

Explanation:

Functional groups are groups that differentiate a specific organic compound from others. A functional group determines the chemical property of the compound that possesses it.

For example, just like alkene and alcohol functional groups have characteristics double bond (=) and hydroxyl (OH) group respectively, the image in the attachment of this question has a BENZENE RING at the core of its structure, hence, the organic compound can be regarded to have an AROMATIC FUNCTIONAL GROUP.

4 0
3 years ago
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