We need moles of Ca(OH)_2
- Molarity=Moles/Volume in L
- 0.025=Moles/1.5
- Moles=1.5(0.025)
- Moles=0.0375mol
Molar mass of Ca(OH)_2=74g/mol
Now
- Mass=Molar mass×Moles
- Mass=0.0375×74
- Mass=2.77g
Option C
A coffee filter, a strainer, or a ladle can be used to separate the parts of a heterogeneous mixture.
Answer:
C = 9460 Kj
Explanation:
Given data:
Mass of copper = 2kg
Latent heat of vaporization = 4730 Kj/Kg
Energy required to vaporize 2kg copper = ?
Solution:
Equation
Q= mLvap
by putting values,
Q= 2kg × 4730 Kj/Kg
Q = 9460 Kj
hydrogen combines with sulfur is H2S
<span> hydrogen combines with
oxygen H2O</span>
<span>Hydrogen sulfide<span> <span>is the </span></span>chemical compound<span> <span>with the </span></span>formula <span>H<span>
2S</span></span>. It is a colorless gas<span> <span>with the characteristic foul odor of rotten </span></span>eggs<span>; it is heavier than air, very poisonous,
corrosive, flammable, and explosive; properties shared with the denser </span>hydrogen
chalcogenides</span>
<span> </span>
