3 years ago

The observation has to be made up and i can’t think of anything or a hypothesis who can help!

Chemistry

1 answer:

Setler79 [48]3 years ago

8 0

Answer:the answer is hypothesis

Explanation: that’s the answer

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Is this a physical or chemical change?? please help ASAP!!!

Leona [35]

Answer:

chemical

Explanation:

It is breaking down the molecules. That's chemistry

5 0

3 years ago

If the compound has a molar mass of 156 g/mol, what is its molecular formula?

oksano4ka [1.4K]

I believe that the choices for this question are:
C2H4O2, C4H8O4 CH2O, C6H12O6 C3H6O3, C6H12O6 C2H4O2, C6H12O6

The answer to this based on the molar masses given is:
C2H4O2, C6H12O6

To prove calculate the molar mass:
C2H4O2 = 2*12 + 4*1 + 2*16 = 60
C6H12O6 = 6*12 + 12*1 + 6*16 = 180

3 0

3 years ago

How many isomeric esters including structural isomers and stereoisomers can be made with the molecular formula C5H10O2 if methan

defon

Methanoic acid has a molecular formula of HCOOH, when form an ester it's HCOO-, so the rest of the ester is -C4H9, a saturated 4 carbon chain. As shown in the attached diagram, there are 4 structural isomers, and the third isomer has 2 stereoisomers. So the answers is D:5.