Given parameters:
Mass of H₃PO₄ = 49g
Unknown:
Number of moles = ?
Solution:
To find the number of moles of a given specie;
number of moles =
Molar mass = 3(1) + 31 + 4(16) = 98g/mol
Input the parameters and solve;
Number of moles = = 0.5mole
The number of moles is 0.5mole
Ph 4=100 ions
Ph5=10.0 or 1,000
Each Ph unit has 10 times as many hydrogen ions as the unit above it.
In chemistry, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
Answer:- 10 L of ethane.
Solution:- The given balanced equation is:
From this equation, ethane and oxygen react in 2:7 mol ratio, the ratio of volumes would also be same if they are at same temperature and pressure.
Since 14 L of each gas are taken, the oxygen will be the limiting reactant and ethane will be the excess reactant. Let's calculate the volume of ethane used:
=
From above calculations, 4 L of ethane are used. So, excess volume of ethane left after the completion of reaction = 14 L - 4 L = 10 L
Hence, 10 L of ethane will be remaining.
Answer:
6 N
Explanation:
Per Archimedes' Principle, the buoyant force on an object is equal to the weight of the fluid displaced.
If the buoyant force is 6 N, the weight of the water displaced is 6 N.