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eimsori [14]
3 years ago
9

Polysaccharides always:a. are a string of 3 or more sugar molecules.b. contain lipids.c. are polymers.d. The first and second ch

oices are correct.e. The first and third choices are correct.
Chemistry
1 answer:
tamaranim1 [39]3 years ago
7 0

Answer:e. The first and third choices are correct.

Explanation:

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Carbon dioxide is produced when dilute hydrochloric acid reacts with
user100 [1]

Carbon dioxide is created when hydrolic is mixed with calcium carbonate.

8 0
2 years ago
I need helps plss!!!!
Leni [432]

Answer:

Copper = 2 Boron = 12 (copper and boron combined = 14)

Explanation:

the number after the element is the amount of atoms there is

8 0
2 years ago
Select the keyword or phrase that will best complete each sentence.
pishuonlain [190]

Answer:

1) acetylide

2) enol

3) aldehydes

4) tautomers

5) alkynes

6) Hydroboration

7) Keto

8) methyl ketones

Explanation:

Acetylide anions (R-C≡C^-) is a strong nucleophile. Being a strong nucleophile, we can use it to open up an epoxide ring by SN2 mechanism. The attack of the acetylide ion occurs from the backside of the epoxide ring. It must attack at the less substituted side of the epoxide.

Oxomercuration of alkynes and hydroboration of alkynes are similar reactions in that they both yield carbonyl compounds that often exhibit keto-enol tautomerism.

The equilibrium position may lie towards the Keto form of the compound. Usually, if terminal alkynes are used, the product of the reaction is a methyl ketone.

3 0
3 years ago
If an atom contains 12 protons and 10 neutrons, what's its mass number?
user100 [1]
A = Z + n

A = 12 + 10

A = 22

Answer C

hope this helps!
7 0
3 years ago
Which type of chemical bond involves the sharing of valence electrons between two atoms?
mr_godi [17]
Covalent bond is the type of bond which involves the sharing of valence electrons between two atoms. 
This bond usually arises from the equal attraction of the nuclei of the two atoms for the electrons shared.

Ionic bond, on the other hand, arises due to the transfer of electrons from the valence shell of one atom to the valence shell of the other.
7 0
3 years ago
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