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Questions (10)
After 0.69 g of CoCl2⋅6H2O is heated, the residue has a mass of 0.333 g . Calculate the % H2O in the hydrate.
4 answers
1,223 views
What mass of HBr (in g) would you need to dissolve a 3.7 −g pure iron bar on a padlock?
4 answers
4,303 views
The figure (Figure 1) shows the reaction of element A (lavender spheres) with element B (tan spheres). Write the balanced
4 answers
3,331 views
What mass of H2 would be produced by the complete reaction of the iron bar.
Hydrobromic acid dissolves solid iron according to
4 answers
10,056 views
Assume you are performing the calibration step of Experiment 8 and you begin with 80 g of water at 20 oC and 80 g of water at 80
2 answers
655 views
Bomb calorimetry is best for determining heat values. Because we cannot have a bomb calorimeter for every pair of students, we
3 answers
3,098 views
How much work (in J) is required to expand the volume of a pump from 0.0 L to 2.7 L against an external pressure of 1.2 atm ?
4 answers
1,688 views
A system releases 647 kJ of heat and does 150 kJ of work on the surroundings.
What is the change in internal energy of the
2 answers
1,058 views
A silver block, initially at 59.8 ∘C, is submerged into 100.0 g of water at 24.6 ∘C, in an insulated container. The final
3 answers
825 views
When 1.560 g of liquid hexane (C6H14) undergoes combustion in a bomb calorimeter, the temperature rises from 25.76 ∘C to 38.31
2 answers
930 views
Answers (2)
this isnt correct.
and .....hat was the actual number of moles of water per formula unit CoCl2
