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Chemistry Homework Help => General Chemistry => Topic started by: omo5031 on March 13, 2012, 08:48:11 PM

Title: WATER CYCLE PLS help ASAP
Post by: omo5031 on March 13, 2012, 08:48:11 PM
Rainwater contains carbonic acid. Rainwater will dissolve calcium carbonate. The natural water supply in The United States contains calcium.
Calculate the concentration, in mol/ dm^3, of the solution formed by dissolving 8 g of calcium carbonate in 500 cm^3 of rainwater. (Ca = 40, C =12, O = 16, H = 1 )
thanks in advance :)
Title: Re: WATER CYCLE PLS help ASAP
Post by: uma on March 17, 2012, 09:46:13 PM
Calculate the molar mass of CaCO3 and take out the number of moles
moles = mass / molar mass
           now divide  moles by litres (volume) to get the concentration