Answer:
Chemical reaction, not physical
Explanation:
Answer:
THE NORMAL BOILING POINT OF A SOLUTION CONTAINING 64.5 g OF QUINOLINE IN 500 g OF BENZENE IS 82.6 C
Explanation:
Boiling point = old boiling point + molarity * boiling point constant (Kb)
First, you calculate the number of moles of quinoline in the solution
number of moles = mass / molar mass
Since the molar mass of quinoline has been given as 129 g/mol
number of moles = 64.5 g / 129 g/mol
number of moles = 0.5 moles.
Next is to determine the molarity:
molarity = number of moles of solute / kilogram of solvent
molarity = 0.5 moles / 500/1000 kg
molarity = 0.5 / 0.5
molarity = 1 M
The new boiling point can then be calculated using the formula:
B. P = old B.P + Kb * molarity
B.P = 80.10 + 2.50 * 1
B.P = 80.10 + 2.50
B.P = 82.6 degree celsius
Explanation:
oxidation is adding of oxygen and removal of hydrogen.
Reduction means removal of oxygen and addition of hydrogenm
Answer:
![\large \boxed{\text{7 g}}](https://tex.z-dn.net/?f=%5Clarge%20%5Cboxed%7B%5Ctext%7B7%20g%7D%7D)
Explanation:
The Law of Conservation of Mass states that matter cannot be destroyed or created.
That is, the total mass before and after the reaction stays the same.
A + B ⟶ C
mass/g: 2 7 x
![\begin{array}{rcl}\text{Mass of A + Mass of B} & = & \text{Mass of C} \\\text{5 g + 2 g} & = & x\\x& = & \textbf{7 g}\\\end{array}\\\text{The mass of C is $\large \boxed{\textbf{7 g}}$}](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Brcl%7D%5Ctext%7BMass%20of%20A%20%2B%20Mass%20of%20B%7D%20%26%20%3D%20%26%20%5Ctext%7BMass%20of%20C%7D%20%5C%5C%5Ctext%7B5%20g%20%2B%202%20g%7D%20%26%20%3D%20%26%20x%5C%5Cx%26%20%3D%20%26%20%5Ctextbf%7B7%20g%7D%5C%5C%5Cend%7Barray%7D%5C%5C%5Ctext%7BThe%20mass%20of%20C%20is%20%24%5Clarge%20%5Cboxed%7B%5Ctextbf%7B7%20g%7D%7D%24%7D)
Answer and Explanation:
(a)
: its chemical name is sodium sulfate in which sodium is present as
and sulfate is present as ![So_4^{2-}](https://tex.z-dn.net/?f=So_4%5E%7B2-%7D)
(b)
: Its chemical name is copper nitrate which is a inorganic compound which is mostly crystalline in nature
(c)
: Its chemical name is iron carbonate or ferric carbonate