You and a partner are asked to complete a lab entitled“Oxides of Ruthenium” that is scheduled to extend over twolab periods. The first lab, which is to be completed by yourpartner, is devoted to carrying out compositional analysis.In the second lab, you are to determine melting points. Upongoing to lab you find two unlabeled vials, one containinga soft yellow substance and the other a black powder. Youalso find the following notes in your partner’s notebook—Compound 1: 76.0% Ru and 24.0% O (by mass), Compound2: 61.2% Ru and 38.8% O (by mass). (a) What is the empiricalformula for Compound 1? (b) What is the empiricalformula for Compound 2? Upon determining the meltingpoints of these two compounds, you find that the yellowcompound melts at 25 °C, while the black powder does notmelt up to the maximum temperature of your apparatus,1200 °C. (c) What is the identity of the yellow compound?(d) What is the identity of the black compound? (e) Whichcompound is molecular? (f) Which compound is ionic?
You and a partner are asked to complete a lab entitled
“Oxides of Ruthenium” that is scheduled to extend over two
lab periods. The first lab, which is to be completed by your
partner, is devoted to carrying out compositional analysis.
In the second lab, you are to determine melting points. Upon
going to lab you find two unlabeled vials, one containing
a soft yellow substance and the other a black powder. You
also find the following notes in your partner’s notebook—
Compound 1: 76.0% Ru and 24.0% O (by mass), Compound
2: 61.2% Ru and 38.8% O (by mass). (a) What is the empirical
formula for Compound 1? (b) What is the empirical
formula for Compound 2? Upon determining the melting
points of these two compounds, you find that the yellow
compound melts at 25 °C, while the black powder does not
melt up to the maximum temperature of your apparatus,
1200 °C. (c) What is the identity of the yellow compound?
(d) What is the identity of the black compound? (e) Which
compound is molecular? (f) Which compound is ionic?
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