Chemistry, 04.12.2021 15:10, Hazeleyes13
2g of limestone sample (containing CaCO3 as the base substance ) was dissolved in a 50cm³ of 1.0M HCI. the resulting solution was made up to 250cm³ with water. 25cm³ of this solution required 11.6cm³of 0.1M NaOH for nuetralisation. calculate the CaCO3 present in the lime stone sample. ( Note ratio of HCI to CaCO3 from the balanced reaction equation is 2:1)
Answers: 1
Chemistry, 22.06.2019 03:30, ruleolivas
Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.
Answers: 3
Chemistry, 22.06.2019 11:00, snowprincess99447
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
2g of limestone sample (containing CaCO3 as the base substance ) was dissolved in a 50cm³ of 1.0M HC...
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