Why do smokers have a more difficult time getting rid of bronchitis

Chemistry

2 answers:

Digiron [165]2 years ago

6 0

Answer:

C. Smoking damages the cilia in the respiratory system

son4ous [18]2 years ago

4 0

Answer:

C. Smoking damages the cilia in the respiratory system.

Explanation:

Hope this helped.

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Which metal is more reactive calcium or cobalt

mihalych1998 [28]

Calcium would be more reactive because it is closer to francium on the periodic table, francium is the MOST reactive element.

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4 years ago

Determine molar mass of Mn (ClO3)3

goldenfox [79]

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M(Mn(ClO3)3)=305.279 g/mol

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3 years ago

What property did mendeleev use to organize his periodic table?

Over [174]

<h2>Answer:</h2>

Mendeleev grouped elements with similar chemical properties (especially valency) together and noted their mass as well. At first he only wrote down 9 elements:

Cl 35.5, K 39, Ca 40

Br 80, Rb 85, Sr 88

I 127, Cs 133, Ba 137

He added more elements to his first period table little by little, putting them into groups by valency and sorting them within their group by mass. He noted that the mass in most cases also increases by group within a period.

On 6 March 1869, he presented his work "The Dependence between the Properties of the Atomic Weights of the Elements" for the first time. It stated that:

The elements, if arranged according to their atomic weight, exhibit an apparent periodicity of properties.

Elements which are similar regarding their chemical properties either have similar atomic weights (e.g., Pt, Ir, Os) or have their atomic weights increasing regularly (e.g., K, Rb, Cs).

The arrangement of the elements in groups of elements in the order of their atomic weights corresponds to their so-called valencies, as well as, to some extent, to their distinctive chemical properties; as is apparent among other series in that of Li, Be, B, C, N, O, and F.

The elements which are the most widely diffused have small atomic weights.

The magnitude of the atomic weight determines the character of the element, just as the magnitude of the molecule determines the character of a compound body.

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2 years ago

What are the 3 different groups of metals called?

avanturin [10]

Answer: Ferrous metals, non ferrous metals and alloys.

Explanation:

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3 years ago

A mixture of A and B is capable of being ignited only if the mole percent of A is 6 %. A mixture containing 9.0 mole% A in B flo

atroni [7]

Explanation:

As it is given that mixture (contains 9 mol % A and 91% B) and it is flowing at a rate of 800 kg/h.