The electromagnetic force is responsible for most of the interaction we see in our environment today. The EMF holds electrons in their orbit around the nucleus.
Factors that can affect a magnets strength include : heat, radiation, strong, electrical currents in close proximity of to the magnet
The representation is showing potassium atom (K) and Chlorine atom (Cl) when it ought to show their ions i.e potassium ion (K⁺) and Chlorine ion (Cl¯)
<h3>Dissociation equation for KCl</h3>
When potassium chloride, KCl dissolves in water, it dissociate to produce potassium ion (K⁺) and Chlorine ion (Cl¯) as shown below:
KCl(aq) —> K⁺(aq) + Cl¯(aq)
The representation given in the question is only showing potassium atom (K) and Chlorine atom (Cl). This makes it wrong as dissolution of ionic compounds in water will results in the corresponding ions of the element that makes up the compound
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Answer:
Mass of carbon tetrachloride 135.15 g.
Explanation:
Given data:
Volume of carbon tetrachloride = 85.0 mL or 85.0 cm³
Density of carbon tetrachloride = 1.59 g/cm³
Mass of carbon tetrachloride = ?
Solution:
Formula:
D=m/v
D= density
m=mass
V=volume
Now we will put the values in formula:
1.59 g/cm³ = m / 85.0 cm³
m = 1.59 g/cm³ ×85.0 cm³
m = 135.15 g
Answer:
0.87mole
Explanation:
The reaction equation is given as;
4Fe + 3O₂ → 2Fe₂O₃
Number of moles of Fe₂O₃ in 138.5g
To solve this problem;
Number of moles =
Molar mass of Fe₂O₃ = 2(56) + 3(16) = 160g/mol
Now;
Number of moles = = 0.87mole