Answer:
8.22E⁰ kg
Explanation:
Given data:
Mass of glucose = ?
Number of molecules = 2.75×10²⁵ molecules
Solution:
The given problem will solve 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.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen
For 2.75×10²⁵ molecules of glucose:
One mole of glucose = 180 g
180 g/6.022 × 10²³ molecules× 2.75×10²⁵ molecules
82.2 × 10² g
8220 g
8.22 Kg
8.22E⁰ kg
Na2SO45
Explanation:
This is the best i could come up with
Answer:
Since the melting point of iron (1538 C) is higher than the Curie point (770 C), the recast iron will lose its original magnetism. After the iron has cooled below the Curie point, it can be re-magnetized.