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hammer [34]
3 years ago
10

The photograph shows one of the boats in a science club's toy boat race. All the boats were powered by identical

Chemistry
2 answers:
romanna [79]3 years ago
6 0

Answer:

boat p

Explanation:

____ [38]3 years ago
4 0

Answer:

Boat p

Explanation:

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History of Aluminum​
solniwko [45]

Answer:

Aluminium was named after alum, which is called 'alumen' in Latin. This name was given by Humphry Davy, an English chemist, who, in 1808, discovered that aluminium could be produced by electrolytic reduction from alumina (aluminium oxide), but did not manage to prove the theory in practice.

Explanation:

5 0
3 years ago
Read 2 more answers
The condensation reaction that forms nucleic acid polymers occurs between a _____ group on one nucleotide and a _____ group on a
frozen [14]

Answer:

1=hydroxyl of phosphate

2=hydroxyl

Explanation:

Nucleic acid is the condensation polymer of nucleotide. Nucleotides are link together through ester bond. The hydroxyl group of phosphate on one nucleotide goes to condensation reaction with the hydroxyl group of another nucleotide. This is chain process, a large molecule of nucleic acid is formed. It is also called polynucleotide.

RNA and DNA are formed by the nucleic acid. The building block of nucleic acid made up of three chemicals.

  1. Pentose sugar
  2. Base
  3. Phosphate

Pentose sugar:

The sugars present in DNA and RNA is pentose. In DNA this sugar is deoxyribose while in case of RNA this is ribose sugar. The hydroxyl groups are present on these sugars. Ribose consist of four hydroxyl group while deoxyribose consist of three hyrdroxyl group. These react with phosphoric acid and carboxylic acid and form ester.

Base:

RNA and DNA are consist of four bases:

DNA= Adenine, guanine, thymine, cytosine

RNA= Adenine, guanine, uracil, cytosine

Phosphate:

The inorganic acid H3PO4 is present. The hydroxyl group present on it undergoes the reaction with amines and alcohol to form amide and ester respectively.

3 0
3 years ago
What is the Lewis acid in the following reaction? NH3 + BI3 → I3BNH3
Whitepunk [10]

The correct answer is BI₃

Lewis acid refers to a compound that could accept a pair of electrons, while Lewis base refers to a compound that could donate a pair of electrons.

In the mentioned reaction,

In NH₃, nitrogen exhibits a lone pair of electrons and is functioning as a Lewis base. In BI₃, the boron is deficient for an electron pair, thus in order to complete its octet it functions as a Lewis acid.

8 0
3 years ago
The four planets closest to the sun that are mostly made of rock and metal
tatiyna

Answer:

Mercury, Venus, Earth and Mars.

Explanation:

6 0
2 years ago
What is the pH of a solution containing a 1.00 x 10−4 M solution of HCl?
ohaa [14]
HCl = H⁺ + Cl⁻

c(HCl)=1.00*10⁻⁴ mol/l

[H⁺]=c(HCl)=1.00*10⁻⁴ mol/l

pH=-lg[H⁺]

pH=-lg(1.00*10⁻⁴)=4

pH=4
7 0
3 years ago
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