2. Why does the CDC recommend hand sanitizers with at least 60% alcohol?! I

Chemistry

1 answer:

choli [55]3 years ago

3 0

Answer:

Here's it:

Explanation:

Germs are everywhere! They can get onto hands and items we touch during daily activities and make us sick. Cleaning hands at key times with soap and water or hand sanitizer that contains at least 60% alcohol is one of the most important steps you can take to avoid getting sick and spreading germs to those around you.

There are important differences between washing hands with soap and water and using hand sanitizer. Soap and water work to remove all types of germs from hands, while sanitizer acts by killing certain germs on the skin. Although alcohol-based hand sanitizers can quickly reduce the number of germs in many situations, they should be used in the right situations.

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Systematic name for Fe2O3 (s)

GREYUIT [131]

Cul (s) --> represents its state which means solid, Here Valency of copper is 1 so its cuprous.

Fe2O3--> Ferric Oxide is a solid. Here valency of Fe is +3 so its Ferric 

CoF2--> Cobalt Flouride is a solid

FeO --> Ferrous Oxide is a solid. Here valency of iron is +2 so its Ferrous.

7 0

3 years ago

Read 2 more answers

The upper part of the mantle is Hard OR Soft

sladkih [1.3K]

Answer: Hard

Explanation:

The upper part of the mantle is hard as it contains thick rock layers. The mantle's upper layer and the crust make up a brittle and rigid rock that's referred to as the Lithosphere.

The upper mantle starts below the Earth crust and then stops at the start of the lower mantle. We should note that the upper mantle results in the movement of the tectonic plates.

6 0

3 years ago

HBr can be added to alkenes in either the absence or presence of peroxides (producing either the Markovnikov or the anti-Markovn

Dmitrij [34]

Answer:

1) 2-bromobutane

2) 1-bromobutane

Explanation:

In the HBr reaction, we will have a markovniknov reaction due to the carbocation formation. The Br- then would be added in the most substituted carbon of the double bond.

In the HBr/peroxide reaction we have the opposite case: an anti-markovnikov reaction. Therefore the Br- would be added in the least substitued carbon of the double bond.