Answer:
The answer is A, if im not mistaken
Answer:
1 It gives the cell its structure
2 It regulates the materials that enter and leaves the cell
Answer:
Ag+(aq) + Cl-(aq) —> AgCl(s)
Explanation:
2AgNO3(aq) + CaCl2(aq) —>2AgCl(s) + Ca(NO3)2(aq)
The balanced net ionic equation for the reaction above can be obtained as follow:
AgNO3(aq) and CaCl2(aq) will dissociate in solution as follow:
AgNO3(aq) —> Ag+(aq) + NO3-(aq)
CaCl2(aq) —> Ca2+(aq) + 2Cl-(aq)
AgNO3(aq) + CaCl2(aq) –>
2Ag+(aq) + 2NO3-(aq) + Ca2+(aq) + 2Cl-(aq) —> 2AgCl(s) + Ca2+(aq) + 2NO3-(aq)
Cancel out the spectator ions i.e Ca2+(aq) and 2NO3- to obtain the net ionic equation.
2Ag+(aq) + 2Cl-(aq) —> 2AgCl(s)
Divide through by 2
Ag+(aq) + Cl-(aq) —> AgCl(s)
The, the net ionic equation is
Ag+(aq) + Cl-(aq) —> AgCl(s)
Answer:
139.94 grams of solute is present in kilograms of water
Explanation:
Temperature of the ice water = T = 1.0°C
Temperature of the mixture =
=-3.0°C
Depression in freezing point 
=1.0°C-( -3.0°C)=4°C

m = molality of the solution
= Molal depression constant

Mole of solute = 0.1705 moles
Mass of solute = 11.1 g
Moles of solute = 
Molar mass of the solute= M
M = 65.088 g/mol
Molality of the solution = m = 
g of solute /kg of water
139.94 grams of solute is present in kilograms of water