Chemistry, 08.11.2019 04:31 madelein51301
A0.450 g0.450 g sample of impure caco3(s)caco3(s) is dissolved in 50.0 ml50.0 ml of 0.150 m hcl(aq)0.150 m hcl(aq) . the equation for the reaction is caco3(s)+2hcl(aq)⟶cacl2(aq)+h2o(l)+ co2(g) caco3(s)+2hcl(aq)⟶cacl2(aq)+h2o(l)+ co2(g) the excess hcl(aq)hcl(aq) is titrated by 9.35 ml9.35 ml of 0.125 m naoh(aq)0.125 m naoh(aq) . calculate the mass percentage of caco3(s)caco3(s) in the sample.
Answers: 3
Chemistry, 22.06.2019 11:00
Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.
Answers: 1
Chemistry, 23.06.2019 09:20
1) a. water molecule breaks up into hydrogen and oxygen on passing electricity. does this involve breaking intermolecular or intramolecular forces of attraction. explain b. on boiling water changes to water vapor. does this involve breaking intermolecular or intramolecular forces of attraction. explain methanol evaporates faster than water. contrast the intermolecular forces and the vapor pressures of methanol and water?
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Chemistry, 23.06.2019 13:30
How many ammonium ions and how many sulfate ions are present in a 0.270 mol sample of ?
Answers: 1
A0.450 g0.450 g sample of impure caco3(s)caco3(s) is dissolved in 50.0 ml50.0 ml of 0.150 m hcl(aq)0...
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