If an atom lose 2 electrons it will give Ion with 2+ charge called cation
Answer:
Explanation:
In calorimetry we apply the formula
heat lost = heat gained
m₁ x s₁ t ₁ = m₂ x s₂ t ₂
here t₁ and t₂ are change in temperature . suppose s₁ denotes specific heat of metal a nd s₂ denotes specific heat of water .
If s₁ is far less than s₂ , t₁ will be far more than t₂ , to balance the two sides
Hence change in temperature of metal pot will be more than change in temperature of water.
Final temperature will be far away from temperature of the metal pot.
Final temperature will be closer to temperature of water.
Answer:
0.7g of HCl
Explanation:
First, let us write a balanced equation for the reaction between HCl and Al(OH)3.
This is illustrated below:
Al(OH)3 + 3HCl —> AlCl3 + 3H2O
Next, let us obtain the masses of Al(OH)3 and HCl that reacted together according to the equation. This can be achieved as shown below:
Molar Mass of Al(OH)3 = 27 + 3(16+1)
= 27 + 3(17) = 27 + 51 = 78g/mol.
Molar Mass of HCl = 1 + 35.5 = 36.5g/mol
Mass of HCl from the balanced equation = 3 x 36.5 = 109.5g
Now we can obtain the mass of HCl that would react with 0.5g of Al(OH)3. This can be achieved as follow:
Al(OH)3 + 3HCl —> AlCl3 + 3H2O
From the equation above,
78g of Al(OH)3 reacted with 109.5g of HCl.
Therefore, 0.5g of Al(OH)3 will react with = (0.5 x 109.5)/78 = 0.7g of HCl
Answer:
the answer is chemical element because when a symbol consists of two letters the first letter is always capitalized