Answer:
this is because spreading it makes more sunlight hit the cloth which results in it drying faster
 
        
             
        
        
        
Binary compounds have 2 different elements, and ternary compounds have 3
Nickel(III)oxide:  binary, Ni2O3
Copper (II)iodide: binary, CuI2
Tin(IV) nitride: binary, Sn3N4
Chromium (II)bromide: binary, CrBr2
<span>Iron(III)phosphide: binary, FeP</span>
        
             
        
        
        
Answer:
<u>Mass concentration (g/L) </u><u><em>= 2.49g/L.</em></u>
Explanation:
No. of moles = 
 =  = 0.001245 moles
 = 0.001245 moles
Concentration of KHP (C1) in litres = n/v 
=  = 0.062 mol/L
 = 0.062 mol/L
We know that:
 =
 =  
 
where c1v1 and c2v2 are the products of concentration and volumes of KHP and NaOH respectively.
Since mole ratio is 1 : 1.
1 mole of NaOH - 40g
0.001245 mole of NaOH = 40 × 0.001245 = 0.0498g
⇒0.0498g of NaOH was used during the titration
<u><em>∴Mass concentration (g/L) = 0.0498g ÷ 0.02L</em></u>
<u><em>= 2.49g/L.</em></u>
 
        
             
        
        
        
Answer : The mass of of water present in the jar is, 298.79 g
Solution : Given,
Mass of barium nitrate = 27 g
The solubility of barium nitrate at  is 9.02 gram per 100 ml of water.
 is 9.02 gram per 100 ml of water.
As, 9.02 gram of barium nitrate present in 100 ml of water
So, 27 gram of barium nitrate present in  of water
 of water
The volume of water is 299.33 ml.
As we know that the density of water at  is 0.9982 g/ml
 is 0.9982 g/ml
Now we have to calculate the mass of water.


Therefore, the mass of of water present in the jar is, 298.79 g