Answer:
(4) CuO + H₂ → Cu + H₂O.
Explanation:
<em>(1) Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag.</em>
It is considered as a single replacement reaction that Cu replaces Ag in its salt AgNO₃.
<em>(2) 2Cu + O ₂ → 2CuO.</em>
It is a combustion reaction that Cu reacts with oxygen results CuO.
<em>(3) CuCO₃ → CuO + CO₂.</em>
It is a decomposition reaction that CuCO₃ is decomposed to CuO and CO₂.
<em>(4) CuO + H₂ → Cu + H₂O.</em>
It is considered as a synthesis reaction that two reactants CuO and hydrogen are reacted to produce Cu and H₂O.
<em>So, the right choice is: (4) CuO + H₂ → Cu + H₂O.</em>
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Answer:
Most people, including chemists, prefer to use these common names for the compounds mentioned because they are frequently found, and the common names are shorter, easier to pronounce, and more widely known.
Answer:
3.5 mol·L⁻¹
Explanation:
1. Set up an ICE table.
2. Solve for x
The equilibrium concentration of NO is 1.0 mol·L⁻¹, so
1.0 = 2.0 - 2x
2x + 1.0 = 2.0
2x = 1.0
x = 0.5
3. Calculate the equilibrium concentration of I₂
[I₂] = 4.0 - x = 4.0 - 0.5 = 3.5 mol·L⁻¹
Answer:
A. 0.1 km
Explanation:
0.1 km is equal to 10,000 centimeters.
hope this helps!
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.
