a. Krish's container is heavier than Raunak's container.
b. Both container have the same number of atoms.
Explanation:
The molar mass of any element is equivalent to one mole of that substance.
weight of 1 mole of carbon atom is 12 g and weight of 1 mole of sodium atoms is 23 g.
So, the mass of 5 moles of carbon atoms
12 x 5 = 60 g
In this same way,
the mass of 5 moles of sodium atoms
23 x 5 = 115g
From this, we can say that Krishna’s container is heavier.
b. One mole of a carbon atom has 6.022 x 10^23 atoms and one mole of sodium also has 6.022 x 10^23 atoms.
So, 5 moles of carbon and sodium contains the same number atoms which are
5 x 6.022 x 10^23
= 3.011 x 10^24 atoms.
The balanced chemical reaction is written as:
MnCl2(s)+H2SO4(aq)→MnSO4(aq)+2HCl(g)
We are given the amount of hydrochloric acid to be produced in the reaction. This value will be the starting point for the calculations.We do as follows:
.0525 L HCl ( 1 mol / 22.4 L ) ( 1 mol MnCl2 / 2 mol HCl ) (125.84 g / 1 mol ) = 0.15 g MnCl2
Answer:
The molar mass in g/mol is 121.4 g/m
Explanation:
Let's apply the Ideal Gases Law to solve this:
P . V = n . R. T
V = 125 mL → 0.125L
P = 754 Torr
760 Torr ___ 1 atm
754 Torr ____ (754 / 760) = 0.992 atm
Moles = Mass / Molar mass
0.992 atm . 0.125L = (0.495 g / MM) . 0.082 . 371K
(0.992 atm . 0.125L) / (0.082 . 371K) = (0.495 g / MM)
4.07x10⁻³ mol = 0.495 g / MM
MM = 0.495 g / 4.07x10⁻³ mol → 121.4 g/m
Answer:
b. a compound.
Explanation:
Electrolysis is described as a mechanism in which ionic compounds are decomposed into their elements by transmitting a direct electric current via the compound in a liquid state. At the cathode, the cations are reduced and anions at the anode are oxidized. There is an exchange between ions and atoms in the electrolysis process caused by the addition or removal between electrons from the external circuit. As per the question, the original substance is a compound because the electrolysis method is used to obtain pure elements from their respective compound.
