Answer 6:
True. Component of Mixture can be separated.
Explanation:
When the mixtures are formed there is little energy change. Hence, the components of Mixture can be easily separated by physical means like filtration, and distillation.
For example:
The muddy water containing pieces of clay, chalk, and water. These components can be separated by filter paper (filtration). After filtration ends there left the water. The chalk and clay got separated.
2H₂ + O₂ = 2H₂O
H₂ hydrogen molecule
O₂ oxygen molecule
Answer:
mass= no.of atoms present× atomic mass
no. of moles=given mass÷molar mass
#follow these u'll get ur ans in numericals
Answer:
53.11× 10²³ molecules
Explanation:
Given data:
Number of molecules of CO₂ = ?
Mass of CO₂ = 388.1 g
Solution:
Formula:
Number of moles = mass/ molar mass
Molar mass of CO₂ = 12× 1 + 16×2
Molar mass of CO₂ = 44 g/mol
Now we will put the values in formula.
Number of moles = 388.1 g/ 44 g/mol
Number of moles = 8.82 moles
Now we will calculate the number of molecules by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ molecules
8.82 mol × 6.022 × 10²³ molecules / 1 mol
53.11× 10²³ molecules