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Transverse waves travel with a speed of 100 m/s along a taut copper wire that has a diameter of 1.67 mm. What is the tension in the wire? (The density of copper is 8.93 g/cm3.)
A gaseous reaction occurs at a constant pressure of 45.0 and releases 61.0 of heat. Before the reaction, the volume of the system was 9.00 . After the reaction, the volume of the system was 3.00 .
Differentiate between alkenes and alkynes, cis isomers and trans isomers. Describe how cis- trans isomers
for the following electrochemical cellzns zn21 m h?m h21 atmpta what reaction takes place at the anode? b what
Bromine has P vap= 400mm at 41.0 Celsius and a normal boiling point of 331.9K. Explain what is the heat of delta H vap of bromine in kilojoules per mole. In P2/P1=- delta H vap/R ( 1/T2- 1/T1)
Problem- 1) Is sucrose a reducing sugar? Why or why not? 2) What process do you think is happening to the Copper in Barfoed's test when a positive result is detected
A buffer solutions contains .120 M acetic acid and 0.150 M sodium acetate. How many moles of acetic acid and of sodium acetate are present in 50.0 ml of solution ? = 0.0075 moles.
A hazardous waste incinerator has been burning a certain mass of dichlorobenzene (C6H4Cl2) per hour, and the HCl produced was neutralized with soda ash (Na2CO3).
If a buffer solution is 0.230 M in a weak acid (Ka = 3.8 × 10-5) and 0.410 M in its conjugate base, what is the pH
All substances are in the gas phase. If 0.461 atm of nitrogen and 0.611 atm of hydrogen react, what is the partial pressure of ammonia (in mmHg) when this reaction goes 69.3 complete. The volume and temperature are constant.
ideal gas originally at STP expands irreversibly and isothermally from point A to point B in the Carnot cycle diagram. It then is expanded reversibly and adiabatically from B to C.
Smaller the average distance from the nucleus and the higher the orbital energy. Larger the average distance from the nucleus and the lower the orbital energy.
Calculate the pH at the equivalence point for the titration of 0.20 M HCl with 0.20 M NH3 (Kb = 1.8x10-5)
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