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The pH classification line (potential of hydrogen) starts at 0 and ends at 14. Solutions that have a pH below 7 (which is the neutral), have more acidic characteristics. Solutions, on the other hand, that have their hydrogen potential greater than 7, have basic aspects. A substance with pH 8, therefore, has a basic <span>characteristic.
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Answer:
24 moles
Explanation:
given data
= 48 grams
to find out
how many moles of 
will be produced
solution
we know that Stoichiometry is here as
......................1
so we get here mole of solute that is express as
mole = 
..........................2
put here value for
mole = 
mole of = 24 mole
and
we can say that here as per equation 1 that one mole of is go with one mole of
so here 24 mole is go with 24 moles mole of
so we can say will be produced 24 moles
1. For the first question, we must find the mass of the anhydrous salt, MgSO₄. The molar mass for MgSO₄·7H₂O is 246.47 g/mol, while that of MgSO₄ is 120.37 g/mol.
7.834 g MgSO₄·7H₂O * 1 mol MgSO₄·7H₂O/246.47 g * 1 mol MgSO₄/1 mol MgSO₄·7H₂O * 20.37 g MgSO₄/mol = <em>0.647 g MgSO₄</em>
2. Mass of Water = Mass of sample - Mass of anhydrous sale
Mass of water = 7.834 - 0.647 = 7.19 g
Percent Water in Hydrate = 7.19/7.834 * 100 = <em>91.74%</em>
