What mass of oxygen will react with 10.5g of ethane according to the following reaction? 2 c2h6 + 7 o2 = 4 co2 + 6 h2o what mass of carbon will react with 15.7g of iron(iii)oxide according to the following reaction? 2fe2o3 + 3c = 4fe + 3co2 what mass of iron(iii) oxide is required to produce 16.4g of iron? 2fe2o3 + 3c → 4fe + 3co2 what mass of oxygen will react with 17.5 g of aluminum according to the following reaction? 4 al + 3 o2 → 2 al2o3 what mass of sodium nitride is required to produce 15.1g of nitrogen? 2na3n → n2 + 6na

13. calculate the initial concentration (before precipitation) of carbonate ions after the addition of each 0.05 ml of solution b to the 1.00 l beaker of solution a. divide the work among group members and write the answers in the table in model 3. assume the volume change as solution b is added is negligible. 14. notice the initial concentrations of zn2+ - and cu2+ in the table in model 3. a. explain how these were obtained from the data in model 2. b. as solution b is added and precipitates form, do these initial concentrations change? 15. use the data in model 2 to indicate the presence of precipitate (either znco3 or cuco3) after each 0.05 ml addition of solution b in model 3. 16. use the initial concentrations of carbonate ions and zinc ions to calculate the reaction quotient, qsp for the zinc carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3. 17. use the initial concentrations of carbonate ion and copper(ii) ions to calculate the qsp for the copper(ii) carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3.

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³