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zavuch27 [327]
3 years ago
5

About 75% of living matter is made up of which two essential chemicals?

Chemistry
2 answers:
Alina [70]3 years ago
7 0

Answer:

Carbon and oxegyn

Explanation:

lions [1.4K]3 years ago
3 0

calcium,phosphorus,potassium,and sulfer

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Which answer choice lists the number and type of elements in a compound in the way that is close to their actual arrangement?
alexandr1967 [171]

The chemical formula of a compound express the atoms by which the molecule is formed and the ratio of the atoms in which they are combined.

The space filling model of a compound describe the electron density in the compound of each atom.

The ball and stick arrangement of a compound describe the way in which the molecules are present in three dimensions.

The structural formula state the number of atoms present in the molecule, the type of element or atom present in the molecule and the way in which they are arranged closely which is the bond.

Thus only the structural formula only will cover all the options as stated.

6 0
3 years ago
Which possible discovery would be attributed to an inorganic molecule?
egoroff_w [7]

Answer:

fireproofing spray used in firefighting can be termed as one of the possible discovery that would be attributed to an inorganic molecule.

Explanation: • There a number of advancement been made each day to improve the different process either domestic, industrial, or related to research work. As a number of professionals are always in search to get the right set of information or data to get to a more proper conclusion.

4 0
2 years ago
Read 2 more answers
Calculate the mass of calcium chloride that contains 3.20 x 1024 atoms of chlorine.
frez [133]

Answer:

294.87 gm  CaCl_2

Explanation:

The computation of the  mass of calcium chloride is shown below:

But before that following calculations need to be done

Number of moles of chlorine atom is

= 3.20 × 10^24 ÷ 6.022 × 10^23

= 5.314 moles

As we know that

1 mole CaCl_2 have the 2 moles of chlorine atoms

Now 5.341 mole chloride atoms would be

= 1 ÷ 2 × 5.314

= 2.657 moles

Now

Mass of CaCl_2 = Number of moles × molar mass of  CaCl_2

= 2.657 moles × 110.98 g/mol

= 294.87 gm  CaCl_2

7 0
3 years ago
In many environments, the temperature of the ground and the air right above the ground are both very similar in the middle of th
loris [4]

Answer:

yes i think so

Explanation:

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3 years ago
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Nonmetallic binds are commonly
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