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Harman [31]
3 years ago
9

Which two substances are among the four major types of organic compounds made by living things?

Chemistry
2 answers:
slega [8]3 years ago
8 0

Answer:

C. Proteins

 D. Lipids

Explanation:

C. Proteins 

D. Lipids

DiKsa [7]3 years ago
8 0

Answer:

Lupids

Explanation:

D:)

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aleksandr82 [10.1K]

Answer:

Hydroxy(oxo)bismuthine oxide

3 0
3 years ago
Write the complete and balanced combustion reaction for H2+O2—>
Bas_tet [7]

Answer:

2H2 + 02 --> 2H20

Explanation:

H2 + 02 --> H2O

H =2x2 = 4                |   H = 2 x 2 = 4

                                 |

O =2                          |   O = 1 x <u>2</u> = 2

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7 0
3 years ago
Ethanol melts at -114 °C and boils at 78 °C.
Aliun [14]
A) solid
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Rank the following alkenes in order of increasing stability of the double bond towards addition of HBr:
ASHA 777 [7]

Answer:

2,3-dimethyl-2-butene > 3-methyl-3-hexene > cis-3-hexene > 1-hexene

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Let us also note that terminal alkenes are the least stable because the pi bonds of the alkenes are least stabilized by alkyl groups. This implies that 1-hexene is the least stable alkene among the listed alkenes.

6 0
3 years ago
Which of the following elements would be in the same group or family?
diamong [38]

Answer:

d

Explanation:

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