solution:
The formula to calculate Avagadro’s number(N) from density the following formula is used
N=Avagadro number
M=molar mass of copper
N=number of copper atoms occupying one unit cell of copper
Delta=Density of copper
A= length of edge of unit cell of copper.
Hence from the given option (a),(b),(c) are required. Only atomic number of copper is not needed.
Hence the correct answer is atomic number of copper
Answer:
A
Explanation:
Magnesium.
Magnesium, Zinc and Aluminium are called as Sacrificial Anodes.
They are relatively pure active metals.
the sacrificial anode works by introducing another metal surface with a more negative electronegative and much more anodic surface.
Answer:
2.4E-4
Explanation:
Hello,
By applying the following mass-mole relationship, the concentration could be computed as follows (assuming molarity as long as it isn't specified), since in the silver carbonate two silver molecules are present:
Best regards.
Answer:
C) surface tension
Explanation:
Surface tension is the stretching force on a liquid's surface film caused by bulk liquid particles attracting themselves in the surface layer, which minimises surface area of the liquid.
The surface tension water is high as the strong hydrogen bonds of the on the surface
pull the water molecules together. As such a water drop will tend to occupy the smallest area on the surface.
Water surface tension is 72 dynes/cm at 25°C . That means 72 dynes of force is required to break a water surface film of 1 cm long. Water surface tension varies inversely with temperature. Surface tension of water is as a result of water molecule's polar nature of the and hydrogen bonding.
Answer:
a) blue vitriol: copper (II) sulfate pentahydrate, b) slaked lime: calcium hydroxide, c) oil of vitriol: Sulfuric acid, d) washing soda: sodium carbonate, e) muriatic acid: hydrochloric acid, f) epsom salt: magnesium sulfate, g) chalk: calcium carbonate, h) dry ice: carbon dioxide, o) baking soda: sodium bicarbonate, j) lye: sodium hydroxide.
Explanation: