What is the equation that links concentration (c), number of moles (n), and volume (V)?
dfg
c = concentration (mol dm-3)
n = number of moles (mol)
V = volume (dm3)
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What are the units for concentration in terms of moles?
mol dm-3
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What is the equation that links concentration (c), mass (m), and volume (V)?
gh
c = concentration (g dm-3)
m = mass (g)
V = volume (dm3)
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How do you convert between units of mol dm-3 and g dm-3?
To convert from mol dm-3 into g dm-3, multiply by Mr.
To convert from g dm-3 into mol dm-3, divide by Mr.
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Calculate the mass of HCl in grams in a beaker that contains 0.2 dm3 of a 2.5 g dm-3 solution of HCl.
mass (g) = concentration (g dm-3) x volume (dm3)
mass = 2.5 x 0.2 = 0.5 g
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How do you convert between units of dm3 and cm3?
To convert from dm3 into cm3, multiply by 1,000.
To convert from cm3 into dm3, divide by 1,000.
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What do square brackets [ ] represent when discussing solutions in chemistry?
Square brackets [ ] are used to denote the concentration of a particular substance in a solution.
For example, [H+] represents the concentration of hydrogen ions in a solution.
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