Answer:
80g/mol is the molar mass of the metal
Explanation:
A divalent metal M reacts with HCl as follows:
M + 2HCl → MCl₂ + H₂
The excess of HCl is titrated with NaOH. Thus, we can solve the moles of HCl that reacts with the metal and the moles of the metal. As the atomic weight is the ratio between the mass and moles of the atom:
<em>Moles NaOH:</em>
0.0546L * (0.22mol / L) = 0.0120 moles NaOH = Moles HCl in excess
<em>For NaOH and HCl solutions, Normality is the same than molarity.</em>
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<em>Moles HCl added:</em>
0.100L * (1.28mol / L) = 0.128 moles HCl * (50mL / 200mL) = 0.032 moles
<em>Moles HCl in that react:</em>
0.032 moles - 0.012 moles = 0.020 moles HCl
<em>Moles M:</em>
0.020 moles HCl * (1mol M / 2 mol HCl) = 0.010 moles M
<em>Molar mass M:</em>
0.8g / 0.010mol =
<h3>80g/mol is the molar mass of the metal</h3>
Answer:
A) Mechanical Weathering
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Explanation:
Mechanical weathering breaks rocks into smaller pieces without changing their composition. Ice wedging and abrasion are two important processes of mechanical weathering. Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface
From the balance and the growth you are talking to me, we can say that <span>it would be an inequality of 2x > 4x +12 so in that case it would be in the motnh number 6 where you would find a greater balance.</span>
Answer:
This question is incomplete
Explanation:
This question is incomplete however, the answer is straight forward.
A salt is a compound formed as a result of the neutralization reaction between an acid and a base. The salt formed comprises of the metal from the base and the non-metal from the acid, as shown below
HCl + NaOH ⇒ NaCl + H₂O
Hence, we can say a salt has a metallic and non-metallic component.
Flame test experiment is generally used to detect the presence of metal ions by "releasing" several metallic colour change. Thus, the part of the salt that must have visually responded to the flame test is the metallic component.
