Chemistry, 20.09.2020 14:01 lollipop83
Hard water often contains dissolved Mg2+and Ca2+ions. Water softeners often use sodium carbonate to soften the water. Sodium carbonate is soluble in water, but the carbonate ions form insoluble precipitates with the calcium and magnesium ions, removing them from solution. Suppose a 2.91L solution is 0.0396 M in calcium nitrate and 0.0661 M in magnesium chloride. What mass of sodium carbonate would have to be added to this solution to completely eliminate the hard water ions?
Answers: 3
Chemistry, 22.06.2019 08:00
Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.
Answers: 1
Chemistry, 22.06.2019 14:30
In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never
Answers: 2
Chemistry, 22.06.2019 21:50
If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3
Answers: 2
Hard water often contains dissolved Mg2+and Ca2+ions. Water softeners often use sodium carbonate to...
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