A full understanding of the physical processes which lead to different types of auroras is still incomplete, but the basic cause involves the interaction of the solar wind<span> with the Earth’s magnetosphere. The varying intensity of the solar wind produces effects of different magnitudes, but includes one or more of the following physical scenarios. so the answer is A</span>
Answer:
0.1 moles of magnesium
Explanation:
Mg(s) + 2CH3COOH(aq) -------> Mg(CH3COO)2(aq) + H2(g)
Since the reaction is 1:2 in mole ratio,
1 mole of magnesium reacts with 2 moles of ethanoic acid
x moles of magnesium will react with 0.2 moles of ethanoic acid
2x = 0.2
x = 0.2/2 = 0.1 moles of magnesium used
Answer:
H3O+
(aq) (the hydronium ion)
whereas weak acids dissociate only partially in water.
Explanation:
hope this helps
For all of Carbon's valencies to be satisfied:
H₂C = C = CH₂
Thus, the answer is:
B) Two
Answer:
Empirical formula is Fe₂O₃.
Explanation:
Empirical formula:
It is the simplest formula gives the ratio of atoms of different elements in small whole number.
Given data:
Mass of iron = 4.166 g
Mass of oxygen = 1.803 g
Empirical formula = ?
Solution:
Number of gram atoms of Fe = 4.166 / 55.845 = 0.075
Number of gram atoms of O = 1.803 / 15.999 = 0.113
Atomic ratio:
Fe : O
0.075/0.075 : 0.113/0.075
1 : 1.5
Fe : O = 1 : 1.5
Fe : O = 2(1 : 1.5)
Empirical formula is Fe₂O₃.
