All categories

2 years ago

The air we breathe is not considered by chemists to be an element. why not

2 answers:

7 0

Because Air itself is not an element. it is made up by different elements such as Oxygen and nitrogen. since its made up of a mix of different elements, its rather a homogeneous mixture :)

mrs_skeptik [129]2 years ago

7 0

Answer:

Explanation:

An element is a substance that cannot be broken down by an ordinary physical process. An element is made up of atoms having the same atomic number. There is a periodic table of elements that has all the elements arranged according to there atomic number.

Air is not an element because it actually contains atoms of more than one element (including oxygen, nitrogen and noble gases). Air also contains compounds such as CO₂. These substances that air contains are physically combined, hence air is a mixture.

You might be interested in

Which of these is a common feature for the lac and trp operon? A. Regulatory proteins bind to operator B. Regulatory proteins bi

Arisa [49]

C. <span>Regulatory proteins bind to repressor

Both produces certain proteins to break down lactose as a food source.</span>

4 0

2 years ago

Read 2 more answers

is this loki on fairy tail because with blond hair and with glasses or without glasses (he has no glasses anymore)

Drupady [299]

Answer:

yes it is

Explanation

grey vs natsu

4 0

2 years ago

Serial dilution problem: Six test tubes are placed in a rack. To each tube add 4 mL of saline solution. Now to the first tube ad

ArbitrLikvidat [17]

Answer:

The dilution factor of protein in tube # 4 is 125. Molar concentration is 0.0088 M protein

Explanation:

The dilution factor indicates how many times is more concentrated a main solution in relationship with a diluted solution. In this case, the main solution is in tube #1. For calculating the dilution factor and molar concentration in tube #4 we need the main solution concentration which comes from next equation:

Initial volume * initial concentration = final volume * final concentration

0.5 mL * 10M = 5mL * final concentration

1.1 M = final concentration = main solution concentration

Applying the same equation for remain tubes we have 0.22 M for tube #2, 0.044 M for tube # 4 and 0.0088 for tube # 4.

Dilution factor = Main solution concentration/tube 4 concentration

Dilution factor = 1.1/0.0088 = 125

I hope my answer helps you

3 0

3 years ago

make a chart to show the effect of Sodium Hydroxide and Sulphuric acid on methyl orange and red litmus paper

navik [9.2K]

Answer:

mark me as brainliest plsss

3 0

2 years ago

How does bohrs model agree with Thomson model

Airida [17]

Bohr's Model agree with Thompson's model because Bohr concluded that packets of energy are absorbed or emitted by the atoms when an electron changes shell. Thompson's conclusion states that atoms have small, negatively charged particles (referring to Electrons) as part of their internal structure.

8 0

2 years ago

Read 2 more answers