<span>HCl+NaOH---> NaCl+H2O
the 2 reactives are monovalent . the NaOH is 3 times as concentrated as HCl
So you need 3 volumes HCl 2M to neutralize 1 volume NaOH 6M
and for 75 ml NaOH 6M you need 75*3= 225mL HCl 2M
second question HBr+NH4OH--> NH4Br+H2O
as before 1 HBr for 1NH4OH is needed IF they have the same molarity
Here you need 40/10 =4 more HBr than NaOH
The molarity of NaOH is 4*0.5 =2M</span>
1. Electron
2. Proton
3.Neutron
4. Nucleus
5. Atom
6. Molecule
Answer:
mole fraction benzene = 0.62
mole fraction toluene = 0.38
Explanation:
Raoults law for ideal solutions tells us that the totoal vapor pressure of the solution will be given by adding the partial pressures of the components of the solution and the partial pressures are simply given by the product of the component in solution times its pure vapor pressure at the temperature given:
<h2>p total = x₁ P⁰₁ + x₂ P⁰₂</h2>
where x1 and x2 for this solution denote the mole fractions of benzene and toluene and p⁰ ₁, p⁰₂ the vapor pressures of benzene and toluene respectively.
Solving the algebraic equation:
75 x₁ + 22 x₂ = 55
75 x₁ + 22 ( 1- x₁) = 55 (since x₁ + x₂ = 1)
75 x₁ + 22 - 22 x₁ = 55
53 x₁ = 33
x₁ = 0.62
x₂ = 1 - 0.62 = 0.38
Answer: Conductor
Explanation: A material that conducts thermal energy well is called a thermal conductor.
The answer would be water , carbon dioxide and methane because they all contain more than one element.
Water-H2O
Carbon Dioxide-CO2
Methane-CH4
