Asked by maguzu
given a bottle containing 9M- H2SO4 calculate the number of
a) Grammes of the acud in 1 dm3
b) moles of the acid in 50 cm3
c) if 20cm3 of the acid were to be diluted to 1M, how many milliters of distilled water would be needed?
a) Grammes of the acud in 1 dm3
b) moles of the acid in 50 cm3
c) if 20cm3 of the acid were to be diluted to 1M, how many milliters of distilled water would be needed?
Answers
Answered by
oobleck
The mol wt of H2SO4 is 98 g/mole, so
(a) 9 moles, so ...
(b) 50mL * 1L/1000mL * 9moles/L = ___ moles
(c) 1/9 the concentration, so 9 times the volume, or 180cm^3.
So, you need to add 180-20 = ____ cm^3
(a) 9 moles, so ...
(b) 50mL * 1L/1000mL * 9moles/L = ___ moles
(c) 1/9 the concentration, so 9 times the volume, or 180cm^3.
So, you need to add 180-20 = ____ cm^3
Answered by
Deborah Isdory Mushi
Good
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