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jessjabeguero25

jessjabeguero25

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Eastern Samar State University

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Chemistry3
Answer: The subscripts shows the number of atoms in a chemical formula. If we ...
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Answer: It follows the law of CONSERVATION of MASS which states that in a chem...
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26

Marks: 1

Which molecular formula are also empirical formula?

Choose at least one answer.

A. CH4
B. H2O2
C. Al2O3
D. CHCl3
E. NaCl
F. CH3OH

Question27

Marks: 1

Which formula are molecular formula?

Choose at least one answer.

A. CH4
B. H2O2
C. Al2O3
D. CHCl3
E. NaCl

F. CH3OH

A piece of solid CO2 is placed in a evacuated container. What is in the container when all the carbon dioxide is sublimed?

Choose one answer.

A. CO2(g)
B. C(g) and O2(g)
C. C(s) and O2(g)

D. C(s), O2(g) and CO2(g)

79

Marks: 1

A series of experiments in organic chemistry produced a variety of compounds of carbon hydrogen and oxygen. Which product contained the highest percent mass of carbon?

Choose one answer.

A. Diethylether (C2H5)2O
B. Acetic acid CH3CO2H
C. Acetone (CH3)2CO
D. Ethanol C2H5OH
E. Acetaldehyde CH3CHO
F. Ethyl acetate CH3CO2C2H5

Question80

Marks: 1

How many atoms of hydrogen are in three molecules of TNT CH3C6H2(NO2)3?

Choose one answer.

A. 2
B. 3
C. 4
D. 5
E. 10
F. 15
G. 20
H. 45
Answer: Step-by-step explanation:there are 15 atoms of Hydrogen in 3 molecules...
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