2 Na₂CO₃ + 2 CuSO₄ + H₂O → CuCO₃.Cu(OH)₂ + 2 Na₂SO₄ + CO₂
Malachite molar mass = 221.1 g / mol
So 2 moles CuSO₄ produce 1 mole of malachite
so 1.5 mole CuSO₄ produce (0.75) mole malachite
Mass of malachite = 0.75 mole * 221.1 g/ mol = 165.83 g
Answer:
0.366m = Molality of the solution
Explanation:
To solve this question we must know the addition of a solute produce decreasing in freezing point regard to the pure solvent. The equation is:
ΔT = m*Kf*i
<em>Where ΔT is change in freezing point </em>
(As freezing point of water is 0°C, the ΔT is 2.72°C)
<em>Kf is freezing point depression constant = 1.86°C/m for water</em>
<em>i is Van't Hoff factor. The number of ions produced when 1 mole of the salt is dissolved = 4 ions for Fe(ClO₃)₃, Fe³⁺ and 3 ClO₃⁻ ions</em>
<em>m is molality of the solution.</em>
<em />
Replacing:
2.72°C = m*1.86°C/m*4
<h3>0.366m = Molality of the solution</h3>
<em />
1. all living things are composed of cells
2. cells are the basic building blocks of life
3. All cells are created by preexisting cells
Answer:
Explanation:
100 miles * [ 5280 feet / 1 mile] * 12 inches / 1 foot]
100 * 5280 * 12 inches
6336000 inches in 100 miles
