Questions LLC
Login
or
Sign Up
Ask a New Question
ChemGeek
Questions and answers by visitors named
ChemGeek
Questions (7)
the density of an unknown metal is 2.64 g/cm^3 and its atomic radius is 0.215 nm. It has a face-centered cubic lattice. What is
4 answers
5,348 views
When 0.689 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 11.2C is observed.
Assume the
1 answer
430 views
In chem lab we did an experiment with two rods, one that was martensite (one that made a thud sound) and the other austenite
1 answer
873 views
Calculate the enthalpy (ΔHo) of reaction (kJ) for the equation as written. If the answer is negative, enter the sign and then
1 answer
510 views
Calculate the heat change (q) in kJ for each reaction. Assume the density of the acid solutions is 1.00 g/mL and the heat
3 answers
1,050 views
If 200 mL of 3.70 M aqueous Ba(OH)2 and 980 mL of 0.837 M aqueous HClO4 are reacted stoichiometrically according to the balanced
2 answers
568 views
I am unsure of how to approach this question, any help would be greatly appreciated!
"2.085g of PCl5 were heated to 250°C in a
2 answers
487 views
Answers (2)
1) Another promiment scientist* 2) as if such devices exist, or will in the very near future.* 3) people should focus on the current practices of science and technology, there is a need for careful oversight upon current problems and practices, rather than
q = mc delta t right?
