<h3>
Answer:</h3>
0.00106 mole
<h3>
Explanation:</h3>
- The number of moles of a compound is calculated by dividing the mass of the compound by its molar mass.
Assuming the formula of the compound given is Mg₂P₂O₇ (magnesium pyrophosphate)
Molar mass of Mg₂P₂O₇ = 222.55 g/mol
Mass of the compound = 236 mg or 0.236 g
Therefore;
Number of moles = 0.236 g ÷ 222.55 g/mol
= 0.0010604
= 0.00106 mole ( 3 sf)
Therefore, the number of moles of Mg₂P₂O₇ are 0.00106 mole
Answer:
0.012× 10⁻²³ moles of iron
Explanation:
Given data:
Number of moles of iron = ?
Number of iron atoms = 0.0723 atom
Solution:
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 atoms
0.0723 atom × 1 mol / 6.022 × 10²³ atoms
0.012× 10⁻²³ mol
Answer:
I believe its active transport
Explanation:
I really hope this helps im really sorry if its wrong.