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Ilya [14]
3 years ago
7

“Some types of vaccines need only one shot to protect you for the rest of your life. Other types, such as the one for seasonal f

lu, change from year to year and need to be given annually.”
What does the word annually mean?
Chemistry
2 answers:
IrinaK [193]3 years ago
8 0
Yearly, is the answer.
Elodia [21]3 years ago
4 0
The answer is yearly
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What happens to the potassium atom when it reacts with the chlorine atom? What is the electron configuration of the potassium af
hodyreva [135]

Answer:

See explanation

Explanation:

Potassium is a metal. Remember that metals are electropositive in nature. This implies that they give out electrons when they undergo ionic bonding with nonmetals.

Chlorine is a nonmetal. So the bond between chlorine and potassium is ionic.  Potassium gives out one electron to chlorine and the both ions now attain a stable octet.

The electronic configuration of potassium is [Ar]4s1. After giving out an electron to chlorine in an ionic bond, its electronic configuration is now [Ar].

3 0
3 years ago
Why Ammonia is nut dried by passing through concentrated H2SO4.​
STALIN [3.7K]

Answer:

Because it is absorbed by conc . H . SO , to form ammonium sulphate.

6 0
3 years ago
2 H2O2(aq) ----> 2 H2O(l) + O2(g) in the presence of I-(aq) is proposed to be: Step 1 (slow): H2O2 + I- -----> H2O + OI- S
andrezito [222]

Answer:

Molecularity of the rate determining step = 2

Explanation:

Step 1 (slow): H₂O₂ + I⁻ -----> H₂O + OI⁻

Step 2 (fast): H₂O₂ + OI⁻ -----> H₂O + O₂ + I⁻

The rate determining step in a reaction mechanism is also considered as slowest step.

Slowest step is also considered its highest activation energy in energy profile diagram.

In this case intermediate  (IO⁻) is formed.

Step 1 considered as a slowest step.

So,  Rate = K [H₂O₂][I⁻]

  Molecularity = 2

6 0
3 years ago
The maximum efficiency possible in an energy conversion process that is not limited by the second law of thermodynamics
Anna [14]

Answer:

100 %

Explanation:

The maximun efficiency possible (whem not limited by the  second law of thermodynamics) happens when all the energy used is transformed into the type of energy we required with no other transformations.

For example, in an engine we want that all the energy we supply is being converted to work. That's the ideal case, but in reality always some of that energy is lost in the form of heat.

5 0
3 years ago
What is unique about the size and location of this exoplanet?
swat32

Answer:

It is the smallest planet found in the habitable zone.

Explanation:

3 0
3 years ago
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