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Lina20 [59]
3 years ago
6

H2 H2O H2O2 CH4 All four examples represent

Chemistry
2 answers:
miv72 [106K]3 years ago
8 0
It is covalent  bonds
satela [25.4K]3 years ago
7 0

Answer: molecules


Justification:


1) Given formulas: H₂, H₂O, H₂O₂, CH₄.


2) A molecule is the chemical combination of two or more atoms through covalent bonds.


3) Non-metals only can bond among them by covalent bond, i.e. by sharing electrons.


Two nonmetals cannot bond to each other in other way (ionic bonds) because any of them will not be willing to release an electron completely.


Since the two nonmetal elements just need a few more electrons to complete their respective valence electron shell, they will do it by sharing electrons instead of releasing them.

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Elemental analysis of caffeine yields the following results: 49.49% C, 5.15% H, 28.87% N, and the remainder is O. What is the mo
vova2212 [387]

Answer:

The answer to your question is C₄H₅N₂O

Explanation:

Process

1.- Calculate the percent of oxygen in the sample

    Percent of oxygen = 100 - 49.49 - 5.15 - 28.87

    Percent of oxygen = 16.49 %

2.- Write the percents as grams

C = 49.49 g

H = 5.15 g

N = 28.87 g

O = 16.47 g

3.- Convert the grams to moles

C          12 g ------------------- 1 mol

          49.49 g ----------------  x

             x = (49.49 x 1) 12

             x = 4.12 moles

H        1 g -------------------   1 mol

         5.15 g ----------------  x

            x = (5.15 x 1)/ 1

            x = 5.15 moles

N          14 g  --------------- 1 mol

            28.87 g ----------  x

              x = (28.87 x 1) / 14

              x = 2 mol

O           16 g ---------------- 1 mol

              16.49 g ----------- x

               x = (16.49 x 1) / 16

               x = 1.03 moles

4.- Divide by the lowest number of moles

C     4.12 /  1.03 = 4

H      5.15 / 1.03 = 5

N       2 / 1.03 = 1.9 ≈ 2

O      1.03 / 1.03 = 1

5.- Write the empirical formula

                                 C₄H₅N₂O

6 0
3 years ago
Please please do it because i need an answer.
Natali [406]

Answer:

Positive and Negative electric charge

3 0
3 years ago
What do all prokaryotes and eukaryotes have in common? A. They are unicellular organisms. B. They are multicellular organisms. C
vodomira [7]
They are multicellular
4 0
2 years ago
Sodium+cloride what is the moleculat mass​
lidiya [134]

Answer:

58.44 g/mol

Explanation:

just got done with this unit two weeks ago

3 0
3 years ago
Read 2 more answers
What is the angle between the carbon-sulfur bonds in the carbon disulfide ( cs2 ) molecule?
Bingel [31]

Answer:

180º

Explanation:

Carbon has 4 valence electrons and to complete the octet requires 4 more , so it will share with the oxigen atoms 4 more, forming a single and a pi bond similar to CO2

Since the carbon does not have lone pairs, the geometry around this central atom will be linear and the angle will be 180 ,   S = C = S

7 0
3 years ago
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