Answer:
Mass = 240 g
Explanation:
Given data:
Number of molecules of NaOH = 3.618 × 10²⁴ molecules
Mass in grams = ?
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 NaOH:
1 mole = 6.022 × 10²³ molecules
3.618 × 10²⁴ molecules × 1 mol / 6.022 × 10²³ molecules
0.6 × 10¹ moles
6 moles
Mass of NaOH:
Mass = Number of moles × molar mass
Mass = 6 mol × 40 g/mol
Mass = 240 g
Answer:
bipetal
Explanation:
this is because 2 electrons will be donated by each element, as seen in NO2
Answer:
2 M.
Explanation:
I mole of NaCl reacts with 1 mole of HCl ( from the equation).
2 Liters of 5 molar contains 2 * 5 = 10 moles of NaCl so this will neutralise 10 moles of HCl.
So the concentration of 5 liters of HCl must be 10/5 = 2M.
Answer:
tic
Explanation:
because it is my answer okay
