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DanielleElmas [232]
3 years ago
5

Who arranged the periodic table according to atomic mass

Chemistry
1 answer:
lozanna [386]3 years ago
3 0

Answer:

Dmitri Mendleev in 1869.

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Examine the reaction. NH4OH(aq) →H2O(l) + NH3(g)
shusha [124]

Answer:  A.  1,1,1

Explanation:

The coefficients that will balance the equation; NH4OH(aq) →H2O(l) + NH3(g), is 1, 1, 1, because it proves the total number of atoms of each element on the LHS and RHS of the equation are equal, hence balanced.

LHS          RHS

N = 1            1

H = 5          5

O = 1            1

7 0
3 years ago
Which elements have the most properties in common with magnesium
Lunna [17]
The group that magnesium is in has all the elements that are alike to it.
Magnesium  is in group 2 which is the alkaline earth metals. So elements similar to it would be calcium, beryllium!

----If you need anymore help in chemistry.....just ask me....im very good at chemistry!
5 0
3 years ago
PLEASE HELP
Marysya12 [62]

Answer:

Military

Explanation:

I may be wrong but military seems most likely

6 0
3 years ago
Read 2 more answers
The building block of a nucleic acid, consisting of a five-carbon sugar covalently bonded to a nitrogenous base and a phosphate
Romashka-Z-Leto [24]

Answer:

Nucleotides

Explanation:

Nucleotides are the organic molecules which serve as monomer units for the formation of nucleic acid polymers which are the deoxyribonucleic acid and the ribonucleic acid (RNA) and both are the essential biomolecules within the life on the Earth.

Nucleotides are building blocks of the nucleic acids. They are the molecules which are composed of three sub units which are:  

  • Nitrogenous base which is also called as nucleobase
  • Five-carbon sugar  which can be ribose or deoxyribose
  • At least one phosphate group which is attached to the sugar.
8 0
3 years ago
Which is the IUPAC name for NO?
Vanyuwa [196]

Answer:

Nitrogen (ii) oxide

Explanation:

To know the IUPAC name for NO, we shall determine the oxidation number of N in NO.

NOTE: The oxidation number of oxygen (O) is always – 2.

Thus the oxidation number of N in NO can be obtained as follow:

N + O = 0 (ground state)

N + (– 2) = 0

N – 2 = 0

Collect like terms

N = 0 + 2

N = +2

Thus, the oxidation number of Nitrogen (N) in NO is +2.

Therefore, the IUPAC name for NO is Nitrogen (ii) oxide

3 0
3 years ago
Read 2 more answers
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