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Ksivusya [100]
3 years ago
11

The mixture which contains elements only is (a) air (b) brass (c) mineral water (d) seawater

Chemistry
2 answers:
Olin [163]3 years ago
6 0

Answer:

Air is an great example of elemental mixture.

Sholpan [36]3 years ago
4 0

Answer:

So yes! A mixture can contain just elements if those elements are not chemically reactive to one another. Air is a great example of an elemental mixture as it contains nitrogen, oxygen, and argon (along with some other compounds).

Explanation:

hope this helps you :)

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A water environment<br> Producers<br> Decomposer <br> Consumer <br> Aquatic <br> Terrestrial
dmitriy555 [2]

Answer:

aquatic

Explanation:

aqua is water

5 0
3 years ago
Whic number of the periodic table is the atomic number and which number is the atomic mass?
Anettt [7]

Answer:

The mass number (represented by the letter A) is defined as the total number of protons and neutrons in an atom. Consider the element helium. Its atomic number is 2, so it has two protons in its nucleus.

The atomic mass of a single atom is simply its total mass and is typically expressed in atomic mass units or amu. By definition, an atom of carbon with six neutrons, carbon-12, has an atomic mass of 12 amu.

5 0
2 years ago
What is the balanced equation for the manufacture of ethanol from glucose
Darina [25.2K]

Answer:

C6H12O6 → 2C2H5OH + 2CO2

Explanation:

Glucose is an organic molecule, specifically a sugar, with the formula C612O6 while ethanol is another organic molecule with formula; C2H5OH.

However, as rightly said in this question, ethanol can be got from glucose via a process called fermentation in the presence of a catalyst called YEAST. The balanced equation is as follows:

C6H12O6 → 2C2H5OH + 2CO2

7 0
3 years ago
In a titration of monoprotic acids and bases, there is a large change in pHA. at the point where pH = pKa of the acid.B. when th
Jobisdone [24]

Answer:

D. when the number of moles of acid is exactly equal to the number of moles of base.

Explanation:

<em>Regarding options A. and E</em>., pKa and pKb would only be taken into consideration if the titrations were of <em>weak</em> acids and bases. However it is possible to have a titration of monoprotic acids and bases with strong acids and bases.

Another way of looking at the answer is identifying <em>which one best describes the equivalence point</em>.

3 0
2 years ago
What is the chemical formula for aluminum sulfite?
gulaghasi [49]
Ions and charges= Al+3 SO3-2

The charges must  add up to zero, in order for two +3 aluminum ions to cancel out three -2 sulfite ions.
Al+3 Al+3 SO3-2 SO3-2 SO3-2

<span>So simply put : </span>Al2(SO3)<span>3 </span>
4 0
3 years ago
Read 2 more answers
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