Answer:
Copper does not react with water because the oxygen in water is locked into a compound with one part oxygen and two parts hydrogen. Copper oxide is a compound from the two elements copper and oxygen. Copper in moist air slowly acquires a dull green coating (patina) because its top layer has oxidised with the air.
Explanation:
Answer:
It's a heterogeneous mixture.
Explanation:
Diamond is made of just one element: carbon. Each carbon atom in diamond is connected to four other carbon atoms, in a crystal that extends on and on. There are other forms of pure carbon where the atoms are bonded differently, notably charcoal and graphite.
Answer:
30L
Explanation:
The following data were obtained from the question:
Volume of stock solution (V1) = 1L
Molarity of stock solution (M1) = 6M
Molarity of diluted solution (M2) = 0.2M
Volume of diluted solution (V2) =..?
The volume of the diluted solution can be obtained as follow:
M1V1 = M2V2
6 x 1 = 0.2 x V2
Divide both side by 0.2
V2 = 6/0.2
V2 = 30L
Therefore, the solution must be diluted to 30L in order to obtain 0.2M of the solution.
Answer:
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Explanation: