Chemistry, 10.07.2019 21:00 simmonsl7790
Asupposedly silver crown is tested to determine its density. it displaces 10.7 ml of water and has a mass of 112 g. part a could the crown be made of silver? could the crown be made of silver? no, the crown did not make of silver. the obtained density is higher than the density of silver which is 10.5 g/ml. yes, the crown made of silver. the obtained density is equal to the density of silver which is 10.5 g/ml. no, the crown did not make of silver. the obtained density is lower than the density of silver which is 10.5 g/ml.
Answers: 2
Chemistry, 22.06.2019 00:30
What must happen before a body cell can begin mitotic cell division
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Chemistry, 22.06.2019 00:30
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.
Answers: 3
Chemistry, 22.06.2019 05:00
1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false
Answers: 3
Chemistry, 22.06.2019 09:40
In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need
Answers: 2
Asupposedly silver crown is tested to determine its density. it displaces 10.7 ml of water and has a...
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