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1 year ago

6

A group of students working in a chemistry lab are planning a procedure to

1 answer:

NARA [144]1 year ago

4 0

use a strong base to neutralize, like NaOH, KOH, etc

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The animal kingdom is large and diverse. Scientists discover new species all the time, and they need a way to classify them. The

tatiyna

The answer is D, because "Animals without a backbone are invertebrates."

4 0

3 years ago

A chemist lectures about the following definition for acids and bases. The acid-base behavior is analyzed in terms of how electr

Y_Kistochka [10]

Answer:

the Lewis concept of acids and bases

Explanation:

8 0

3 years ago

Read 2 more answers

a molecule of two nitrogen atoms and four oxygen atoms what is the molecule formula for this compound

kiruha [24]

The formula would be N2O4

6 0

3 years ago

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Add groups to complete polyvinyl alcohol, formed by the polymerization of the following monomer. If a carbon atom contains only

e-lub [12.9K]

Answer:

The resulting structure is:

R-CH-CH2 (OH)-CH-CH2(OH)-CH-CH2(OH)-CH-...

Explanation:

It can be said that vinyl alcohol cannot be polymerized by addition polymerization, since a very unstable radical would be formed, which is not possible. Generally, it is formed by polymerization and subsequent hydrolysis of the vinyl polyacetate. According to the exercise, the structure that results with its four units can be seen that the hydroxyl groups are found in the methylene carbons

8 0

3 years ago

Question 4 point

Ronch [10]

Answer:

$5393.4gH_2O$

Explanation:

Hello there!

In this case, for the described chemical reaction, we can write:

$CH_4+2O_2\rightarrow CO_2+2H_2O$

Thus, by considering the 1:2 mole ratio of methane to water, and the molar mass of the latter (18.02 g/mol), the following is useful to calculate the mass of water that is produced:

$149.65molCH_4*\frac{2molH_2O}{1molCH_4} *\frac{18.02gH_2O}{1molH_2O}$

Which is equal to:

$5393.4gH_2O$

Which is not among the choices.

Regards!

5 0

2 years ago