Here is the three observation about copper.
<h3>What is copper?</h3>
copper (Cu), chemical element, a reddish, extremely ductile metal of the Group 11 (Ib) of the periodic table that is an unusually by its good conductor of to the electricity and heat. Copper of to the found in the free metallic state in nature. This is native copper was first by the used .
The reaction between to the copper carbonate and it is sulphuric acid will be a great neutralization reaction. Copper carbonate will acts like as a base, however, sulphuric acid is an acid. This reaction can also be the viewed as a double line displacement reaction too. By it's understand the nature of this reaction and what will be the final to product of this reaction.
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Answer:
The last answer would be correct because if you have ever done it before you would know that rubbing your feet (just like the rubbing of ice crystals) on the carpet will create the energy you need, then once you touch the metal it creates that spark!
Explanation:
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Answer:
(i) 5-day BOD of the waste is 120 mg/l.
(ii) The ultimate carbonaceous BOD (Lo) is 20 mg/l.
Explanation:
The dilution factor D is 0.05.
The initial DO is 8.0 mg/L and the DO after 5 days is 2.0 mg/L.
The BOD of the waste for an unseeded mixture is
The ultimate carbonaceous BOD (Lo) can be calculated as
The liters in 3.25 g of ammonia 4.28 L
<u><em>calculation</em></u>
Step 1: find moles of ammonia
moles = mass÷ molar mass
From periodic table the molar mass of ammonia (NH₃) = 14 +(1×3 ) = 17 g/mol
3.25 g÷ 17 g/mol = 0.191 moles
Step 2: find the number of liters of ammonia
that is at STP 1 moles = 22.4 L
0.191 moles = ? L
<em>by cross multiplication</em>
={( 0.191 moles ×22.4 L) / 1 mole} = 4.28 L
Answer:
a property ( colour,hardness and boiling point)