Positive ions are atoms that have lost an electron from its outtermost shell. It is positive because electrons are negative and the loss of something negative makes it a bit more positive.
A negative ion is larger than its original atom because it's gained an electron.
The more electrons an atomic has on its electron cloud, the bigger the atom.
Hopefully I didn't confuse you, good luck. ♡
Answer:
T° freezing solution → -11.3°C
T° boiling solution → 103.1 °C
Explanation:
Assuming 100 % dissociation, we must find the i, Van't Hoff factor which means "the ions that are dissolved in solution"
This salt dissociates as this:
SnCl₄ (aq) → 1Sn⁴⁺ (aq) + 4Cl⁻ (aq) (so i =5)
The formula for the colligative property of freezing point depression and boiling point elevation are:
ΔT = Kf . m . i
where ΔT = T° freezing pure solvent - T° freezing solution
ΔT = Kb . m . i
where ΔT = T° boiling solution - T° boiling pure solvent
Freezing point depression:
0° - T° freezing solution = 1.86°C/m . 1.22 m . 5
T° freezing solution = - (1.86°C/m . 1.22 m . 5) → -11.3°C
Boiling point elevation:
T° boiling solution - 100°C = 0.512 °C/m . 1.22 m . 5
T° boiling solution = (0.512 °C/m . 1.22 m . 5) + 100°C → 103.1 °C
Answer:
466.65 K
Explanation:
Using the formula of Pressure law,
P/T = P'/T'.................... Equation 1
Where P = Intial pressure of gas, T = Initial temperature of gas, P' = Final pressure of gas, T' = Final temperature of gas.
make T' The subeject of equation 1
T' = (P'T)/P................... Equation 2
From the question,
Given: P = 500 Torr = (500×133.322) N/m² = 66661 N/m², T = 35°C = (35+273) = 308 K, P' = 101000 N/m²( Standard pressure)
Substitute these values into equation 2
T' = (101000×308)/66661
T' = 466.65 K
oh its a Chlorine isn't it....
it's electronic configuration is
2,8,7
so to make it 8 in its outermost shell it should gain 1 electron...
Answer:
<em>mass of chlorine gas required is 118 kg.</em>
Explanation:
Total mass of the drug (Cisplatin) required = 500 kg
For the drug PtCl2(NH3)2, we first find the molar mass of the compound.
The molar mass of the drug is the total of all the molar mass of the elements in the drug
molar mass of Pt (platinum) in the drug = 195.078 g/mol
molar mass of chlorine (Cl) in the drug = 2 x (35.453 g/mol) = 70.908 g/mol
molar mass of ammonia (NH3) in the drug = 2 x (17.031 g/mol) = 34.062 g/mol
Total molar mass of the drug = 195.078 g/mol + 70.908 g/mol + 34.062 g/mol = 300.048 g/mol
fractional composition of chlorine in the drug = 70.908/300.048 = 0.236
mass of chlorine required for 500 kg of the drug = 0.236 x 500 =<em> 118 kg</em>
