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3 years ago

What are differences between vaccines and antibotics

Chemistry

2 answers:

Ilia_Sergeevich [38]3 years ago

8 0

Answer:

Basic differences between vaccines and antibiotics are presented in the explanation below.

Explanation:

Antibiotics are compounds used to treat bacterial, fungal and protozoan infections, whereas vaccines are those that play an important role in providing immunity to particular viral diseases, such as common cold or influenza. A vaccine can be a dead or inactivated virus, or a compound taken from them after purification. Moreover, vaccines are more likely to help prevent diseases before they occur. Meanwhile, antibiotics help treat those that have already occurred.

lara31 [8.8K]3 years ago

3 0

Answer:

Explanation:

Antibiotics are chemical agents that are used to treat bacterial infections. ... Vaccines are used to prevent infection, particularly viral infections.

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Which element is classified as a noble gas? O N Cl Xe

ivann1987 [24]

Answer: The correct answer is Xenon (Xe).

Explanation:

Noble gases are defined as the gases which have fully filled electronic configuration or stable electronic configuration.

From the given options:

Option 1: Oxygen (O)

The atomic number of this element is 8.

Electronic configuration of this element: $1s^22^22p^4$

As, this is not the stable electronic configuration. Thus, it is not considered as a noble gas.

Option 2: Nitrogen (N)

The atomic number of this element is 7.

Electronic configuration of this element: $1s^22^22p^3$

As, this is not the stable electronic configuration. Thus, it is not considered as a noble gas.

Option 3: Chlorine (Cl)

The atomic number of this element is 17.

Electronic configuration of this element: $1s^22^22p^63s^23p^5$

As, this is not the stable electronic configuration. Thus, it is not considered as a noble gas.

Option 4: Xenon (Xe)

The atomic number of this element is 54.

Electronic configuration of this element: $[Kr]5s^24d^{10}5p^6$

As, this is a stable electronic configuration. Thus, it is considered as a noble gas.

Hence, the correct answer is Xenon (Xe).

7 0

4 years ago

Read 2 more answers

32.7 grams of water vapor takes up how many liters at standard temperature and pressure (273 K and 100 kPa)?

kotegsom [21]

Under standard temperature and pressure conditions, it is known that 1 mole of a gas occupies 22.4 liters.

From the periodic table:
molar mass of oxygen = 16 gm
molar mass of hydrogen = 1 gm
Thus, the molar mass of water vapor = 2(1) + 16 = 18 gm

18 gm of water occupies 22.4 liters, therefore:
volume occupied by 32.7 gm = (32.7 x 22.4) / 18 = 40.6933 liters

5 0

3 years ago

Indicate the oxidation number of oxygen for each compound in the following reaction: 2H2O2(aq)→ 2H2O(l) O2(g) Select the choice

Aleksandr [31]

Answer:

2H2O2(aq)→ 2H2O(l) O2(g) : The oxidation number of oxygen for each compound is -1, -2, 0

Explanation:

In peroxides the oxidation state of oxygen is -1, since one oxygen bonds to the other oxygen and a hydrogen and the bound oxygen captures the electron of the remaining hydrogen. Through a scheme would be

H --- O --- O --- H

We remember that oxygen needs two electrons to get to have the configuration of the nearest noble gas (Lewis octet rule). In Peroxides, the oxygen is linked by covalent bonds. If we take it strictly, peroxide is a grouping of two oxygen, having the whole valence -2. which is why it is usually said that it is when oxygen has a valence -1

As we said the oxidation state is -2, the one that appears in the water molecule, since Hydrogen acts with valence +1 and it is 2 atoms that give up electrons to compensate for oxygen.

In the O2 it acts with valence 0 since we talk about gas in its elementary state. All diatomic molecules in their elemental state, generally gases or metals in solid state, act with a valence of 0.

3 0

3 years ago

A chemist uses 4.0 L of sulfuric acid solution to produce 3.2 gram of product. How much of the same sulfuric acid solution is ne

____ [38]

The concept that can be used in order to determine the answer to this item is that of ratio and proportion. The ratio of the mass of the product to the sulfuric acid solution used in the first set should be proportional to that of the second. If we let x be the volume of the acid then, the equation that can be used is,

3.2 g / 4 L = 8 g / x L

The value of x from the equation is 10.

ANSWER: 10 L

7 0

3 years ago

It requires 2,500 joules to raise a certain amount of water (c = 4.186J/g°C) from 25.0°C to 55.0°C.

maksim [4K]

Answer:

15g

Explanation:

6 0

4 years ago